{ "id": "/abu-dhabi/festivals/1997", "place": { "id": "292968", "slug": "abu-dhabi", "name": "Abu Dhabi", "region": "United Arab Emirates", "country": "AE", "lat": 24.45118, "lon": 54.39696, "elevation_m": 6, "tz": "Asia/Dubai" }, "year": 1997, "tradition": "smarta", "method": "pac-rp@2026.1", "ruleset": "2026.3-draft", "rulings": [ { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-01-05", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 41608, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-01-04T19:34:10+04:00", "utc": "1997-01-04T15:34:10Z", "ms": 852392049641.3724 }, "end": { "local": "1997-01-05T18:45:25+04:00", "utc": "1997-01-05T14:45:25Z", "ms": 852475525135.5897 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-01-04T19:34:10+04:00", "utc": "1997-01-04T15:34:10Z", "ms": 852392049641.3724 }, "end": { "local": "1997-01-05T18:45:25+04:00", "utc": "1997-01-05T14:45:25Z", "ms": 852475525135.5897 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-01-05", "window": { "start": { "local": "1997-01-05T07:07:37+04:00", "utc": "1997-01-05T03:07:37Z", "ms": 852433657268.0251 }, "end": { "local": "1997-01-05T07:07:37+04:00", "utc": "1997-01-05T03:07:37Z", "ms": 852433657268.0251 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-01-06", "window": { "start": { "local": "1997-01-06T07:07:49+04:00", "utc": "1997-01-06T03:07:49Z", "ms": 852520069072.8219 }, "end": { "local": "1997-01-06T07:07:49+04:00", "utc": "1997-01-06T03:07:49Z", "ms": 852520069072.8219 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:34 on Sat 4 Jan to 18:45 on Sun 5 Jan.", "fact": "1997-01-04T15:34:10Z → 1997-01-05T14:45:25Z" }, { "step": "kaala", "text": "Sunrise is at 07:08 on the 5th and 07:08 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 41608 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Abu Dhabi, 1997: Sunday 5 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saphalā Ekādaśī 1997 falls on Sunday 5 January. Ekādaśī runs from 19:34 on Sat 4 Jan to 18:45 on Sun 5 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-01-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-01-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2562, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-01-06T17:06:09+04:00", "utc": "1997-01-06T13:06:09Z", "ms": 852555968955.9415 }, "end": { "local": "1997-01-07T14:43:17+04:00", "utc": "1997-01-07T10:43:17Z", "ms": 852633797405.9261 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-01-06T17:06:09+04:00", "utc": "1997-01-06T13:06:09Z", "ms": 852555968955.9415 }, "end": { "local": "1997-01-07T14:43:17+04:00", "utc": "1997-01-07T10:43:17Z", "ms": 852633797405.9261 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-01-06", "window": { "start": { "local": "1997-01-06T17:48:51+04:00", "utc": "1997-01-06T13:48:51Z", "ms": 852558530621.6901 }, "end": { "local": "1997-01-06T19:35:24+04:00", "utc": "1997-01-06T15:35:24Z", "ms": 852564923806.6698 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1997-01-07", "window": { "start": { "local": "1997-01-07T17:49:33+04:00", "utc": "1997-01-07T13:49:33Z", "ms": 852644972899.0903 }, "end": { "local": "1997-01-07T19:36:02+04:00", "utc": "1997-01-07T15:36:02Z", "ms": 852651361653.7712 } }, "covered_min": 0, "window_min": 106, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 17:06 on Mon 6 Jan to 14:43 on Tue 7 Jan.", "fact": "1997-01-06T13:06:09Z → 1997-01-07T10:43:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:49–19:35 on the 6th, 17:50–19:36 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 107 of 107 minutes on the 6th and 0 of 106 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2562 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Monday 6 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Monday 6 January. Trayodaśī runs from 17:06 on Mon 6 Jan to 14:43 on Tue 7 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-01-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-01-07", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33693, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-01-07T14:43:17+04:00", "utc": "1997-01-07T10:43:17Z", "ms": 852633797405.9261 }, "end": { "local": "1997-01-08T11:46:14+04:00", "utc": "1997-01-08T07:46:14Z", "ms": 852709573602.0338 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-01-07T14:43:17+04:00", "utc": "1997-01-07T10:43:17Z", "ms": 852633797405.9261 }, "end": { "local": "1997-01-08T11:46:14+04:00", "utc": "1997-01-08T07:46:14Z", "ms": 852709573602.0338 } }, "kaala": "nishita", "days": [ { "local_date": "1997-01-07", "window": { "start": { "local": "1997-01-08T00:04:51+04:00", "utc": "1997-01-07T20:04:51Z", "ms": 852667490729.1439 }, "end": { "local": "1997-01-08T00:52:51+04:00", "utc": "1997-01-07T20:52:51Z", "ms": 852670370729.1439 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-01-08", "window": { "start": { "local": "1997-01-09T00:05:16+04:00", "utc": "1997-01-08T20:05:16Z", "ms": 852753915895.6643 }, "end": { "local": "1997-01-09T00:53:16+04:00", "utc": "1997-01-08T20:53:16Z", "ms": 852756795895.6643 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 14:43 on Tue 7 Jan to 11:46 on Wed 8 Jan.", "fact": "1997-01-07T10:43:17Z → 1997-01-08T07:46:14Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:05–00:53 on the 7th, 00:05–00:53 on the 8th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33693 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Tuesday 7 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-07", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Tuesday 7 January. Caturdaśī runs from 14:43 on Tue 7 Jan to 11:46 on Wed 8 Jan and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-01-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-01-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21292, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-01-11T21:55:07+04:00", "utc": "1997-01-11T17:55:07Z", "ms": 853005307440.4436 }, "end": { "local": "1997-01-12T18:49:42+04:00", "utc": "1997-01-12T14:49:42Z", "ms": 853080582324.1456 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-01-11T21:55:07+04:00", "utc": "1997-01-11T17:55:07Z", "ms": 853005307440.4436 }, "end": { "local": "1997-01-12T18:49:42+04:00", "utc": "1997-01-12T14:49:42Z", "ms": 853080582324.1456 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-01-11", "window": { "start": { "local": "1997-01-11T12:06:26+04:00", "utc": "1997-01-11T08:06:26Z", "ms": 852969986433.3085 }, "end": { "local": "1997-01-11T12:54:26+04:00", "utc": "1997-01-11T08:54:26Z", "ms": 852972866433.3085 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-01-12", "window": { "start": { "local": "1997-01-12T12:06:50+04:00", "utc": "1997-01-12T08:06:50Z", "ms": 853056410039.5118 }, "end": { "local": "1997-01-12T12:54:50+04:00", "utc": "1997-01-12T08:54:50Z", "ms": 853059290039.5118 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:55 on Sat 11 Jan to 18:50 on Sun 12 Jan.", "fact": "1997-01-11T17:55:07Z → 1997-01-12T14:49:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:06–12:54 on the 11th, 12:07–12:55 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21292 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Sunday 12 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-12", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Sunday 12 January. Caturthī runs from 21:55 on Sat 11 Jan to 18:50 on Sun 12 Jan and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-01-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/bhogi", "festival": "bhogi", "name": "Bhogi", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32617, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-02-12T15:55:06+04:00", "utc": "1997-02-12T11:55:06Z", "ms": 855748506418.5588 } }, "span": { "of": "transit", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 } }, "kaala": "sunset-day", "days": [ { "local_date": "1997-01-13", "window": { "start": { "local": "1997-01-12T17:53:10+04:00", "utc": "1997-01-12T13:53:10Z", "ms": 853077189512.2189 }, "end": { "local": "1997-01-13T17:53:54+04:00", "utc": "1997-01-13T13:53:54Z", "ms": 853163633571.1451 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1997-01-14", "window": { "start": { "local": "1997-01-13T17:53:54+04:00", "utc": "1997-01-13T13:53:54Z", "ms": 853163633571.1451 }, "end": { "local": "1997-01-14T17:54:38+04:00", "utc": "1997-01-14T13:54:38Z", "ms": 853250077779.6917 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1997-01-14", "days": -1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:58 on Tue 14 Jan.", "fact": "1997-01-13T22:57:31Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:54, and the day of the 14th ends at 17:55.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 32617 s" }, { "step": "counted", "text": "Bhogi is kept the day before Pongal: Tuesday 14 January is the day taken above.", "fact": "follows: pongal − 1 d" }, { "step": "ruling", "text": "Bhogi, Abu Dhabi, 1997: Monday 13 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "bhogi", "follows": { "festival": "pongal", "days": -1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1997-01-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1997-01-12", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Abu Dhabi, Bhogi 1997 falls on Monday 13 January. It is kept the day before Pongal, which falls on Tuesday 14 January. The Sun enters Makara at 02:58 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 12 January.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/bhogi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pongal", "festival": "pongal", "name": "Pongal", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32617, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-02-12T15:55:06+04:00", "utc": "1997-02-12T11:55:06Z", "ms": 855748506418.5588 } }, "span": { "of": "transit", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 } }, "kaala": "sunset-day", "days": [ { "local_date": "1997-01-13", "window": { "start": { "local": "1997-01-12T17:53:10+04:00", "utc": "1997-01-12T13:53:10Z", "ms": 853077189512.2189 }, "end": { "local": "1997-01-13T17:53:54+04:00", "utc": "1997-01-13T13:53:54Z", "ms": 853163633571.1451 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1997-01-14", "window": { "start": { "local": "1997-01-13T17:53:54+04:00", "utc": "1997-01-13T13:53:54Z", "ms": 853163633571.1451 }, "end": { "local": "1997-01-14T17:54:38+04:00", "utc": "1997-01-14T13:54:38Z", "ms": 853250077779.6917 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:58 on Tue 14 Jan.", "fact": "1997-01-13T22:57:31Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:54, and the day of the 14th ends at 17:55.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 32617 s" }, { "step": "ruling", "text": "Pongal, Abu Dhabi, 1997: Tuesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "pongal", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "not_evaluated": "The rule that heads the solar festivals, the day \"taken to begin from midnight\" (p. 106), is not applied to Pongal. It is kept on the first day of the month of Makara as the Tamil districts count it, a transit after sunset going to the next day (p. 244); the Rashtriya Panchang prints Pongal so.", "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1997-01-14", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1997-01-13", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Abu Dhabi, Pongal 1997 falls on Tuesday 14 January. The Sun enters Makara at 02:58 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pongal", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/makara-sankranti", "festival": "makara-sankranti", "name": "Makara Saṅkrānti", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10651, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-02-12T15:55:06+04:00", "utc": "1997-02-12T11:55:06Z", "ms": 855748506418.5588 } }, "span": { "of": "transit", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 } }, "kaala": "civil-day", "days": [ { "local_date": "1997-01-13", "window": { "start": { "local": "1997-01-13T00:00:00+04:00", "utc": "1997-01-12T20:00:00Z", "ms": 853099200000 }, "end": { "local": "1997-01-14T00:00:00+04:00", "utc": "1997-01-13T20:00:00Z", "ms": 853185600000 } }, "covered_min": 0, "window_min": 1440, "qualifies": false }, { "local_date": "1997-01-14", "window": { "start": { "local": "1997-01-14T00:00:00+04:00", "utc": "1997-01-13T20:00:00Z", "ms": 853185600000 }, "end": { "local": "1997-01-15T00:00:00+04:00", "utc": "1997-01-14T20:00:00Z", "ms": 853272000000 } }, "covered_min": 1, "window_min": 1440, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:58 on Tue 14 Jan.", "fact": "1997-01-13T22:57:31Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from midnight to midnight, on the clock of Abu Dhabi.", "fact": "civil-day: midnight-to-midnight · Asia/Dubai" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from midnight. The transit falls on the 14th, not the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from midnight → only-day · margin 10651 s" }, { "step": "ruling", "text": "Makara Saṅkrānti, Abu Dhabi, 1997: Tuesday 14 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "makara-sankranti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "rashi": "Makara", "day_from": "midnight" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-14", "confidence": "determinate" }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1997-01-13", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1997-01-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Abu Dhabi, Makara Saṅkrānti 1997 falls on Tuesday 14 January. The Sun enters Makara at 02:58 on Tue 14 Jan, and the rule counts the day from midnight. Counted from sunrise, as in Orissa, it is 13 January.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/makara-sankranti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/mattu-pongal", "festival": "mattu-pongal", "name": "Mattu Pongal", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32617, "anga": { "type": "sankranti", "index": 9, "key": "makara", "name": "Makara", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-02-12T15:55:06+04:00", "utc": "1997-02-12T11:55:06Z", "ms": 855748506418.5588 } }, "span": { "of": "transit", "start": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 }, "end": { "local": "1997-01-14T02:57:31+04:00", "utc": "1997-01-13T22:57:31Z", "ms": 853196250777.1672 } }, "kaala": "sunset-day", "days": [ { "local_date": "1997-01-13", "window": { "start": { "local": "1997-01-12T17:53:10+04:00", "utc": "1997-01-12T13:53:10Z", "ms": 853077189512.2189 }, "end": { "local": "1997-01-13T17:53:54+04:00", "utc": "1997-01-13T13:53:54Z", "ms": 853163633571.1451 } }, "covered_min": 0, "window_min": 1441, "qualifies": false }, { "local_date": "1997-01-14", "window": { "start": { "local": "1997-01-13T17:53:54+04:00", "utc": "1997-01-13T13:53:54Z", "ms": 853163633571.1451 }, "end": { "local": "1997-01-14T17:54:38+04:00", "utc": "1997-01-14T13:54:38Z", "ms": 853250077779.6917 } }, "covered_min": 1, "window_min": 1441, "qualifies": true } ], "follows": { "festival": "pongal", "name": "Pongal", "local_date": "1997-01-14", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Makara at 02:58 on Tue 14 Jan.", "fact": "1997-01-13T22:57:31Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day is counted from the sunset before it to its own sunset: the day of the 13th ends at 17:54, and the day of the 14th ends at 17:55.", "fact": "sunset-day: sunset-to-sunset · sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from the sunset before it: a transit after sunset belongs to the next day. The transit falls between the sunsets of the 13th and the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunset → only-day · margin 32617 s" }, { "step": "counted", "text": "Mattu Pongal is kept the day after Pongal: Tuesday 14 January is the day taken above.", "fact": "follows: pongal + 1 d" }, { "step": "ruling", "text": "Mattu Pongal, Abu Dhabi, 1997: Wednesday 15 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "mattu-pongal", "follows": { "festival": "pongal", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Makaradi — Makaradi snana, Magh Bihu (Assam), Tila samkranti, Pongal (S. India), Bhogi (S. India — on the day before Pongal), Mattu Pongal (S. India — on the day after Pongal)." }, { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } ], "rashi": "Makara", "day_from": "sunset" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-15", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1997-01-15", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunrise-day", "local_date": "1997-01-14", "statement": "Counted from sunrise (the Orissa rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Orissa rule: In Orissa the solar months of the Amli and Vilayati eras begin civilly on the same day (sunrise to next sunrise) as the samkranti, irrespective of whether this takes place before or after midnight." } } ], "quote": "In Abu Dhabi, Mattu Pongal 1997 falls on Wednesday 15 January. It is kept the day after Pongal, which falls on Tuesday 14 January. The Sun enters Makara at 02:58 on Tue 14 Jan. The rule counts the day from sunset to sunset, and the transit falls between the sunsets of the 13th and the 14th. Counted from sunrise, as in Orissa, it is 14 January.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/mattu-pongal", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-01-19", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16084, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-01-18T11:36:23+04:00", "utc": "1997-01-18T07:36:23Z", "ms": 853572983454.2701 }, "end": { "local": "1997-01-19T12:20:56+04:00", "utc": "1997-01-19T08:20:56Z", "ms": 853662056357.3546 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-01-18T11:36:23+04:00", "utc": "1997-01-18T07:36:23Z", "ms": 853572983454.2701 }, "end": { "local": "1997-01-19T12:20:56+04:00", "utc": "1997-01-19T08:20:56Z", "ms": 853662056357.3546 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-01-18", "window": { "start": { "local": "1997-01-18T07:08:20+04:00", "utc": "1997-01-18T03:08:20Z", "ms": 853556899752.8673 }, "end": { "local": "1997-01-18T07:08:20+04:00", "utc": "1997-01-18T03:08:20Z", "ms": 853556899752.8673 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-01-19", "window": { "start": { "local": "1997-01-19T07:08:13+04:00", "utc": "1997-01-19T03:08:13Z", "ms": 853643292791.1721 }, "end": { "local": "1997-01-19T07:08:13+04:00", "utc": "1997-01-19T03:08:13Z", "ms": 853643292791.1721 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 11:36 on Sat 18 Jan to 12:21 on Sun 19 Jan.", "fact": "1997-01-18T07:36:23Z → 1997-01-19T08:20:56Z" }, { "step": "kaala", "text": "Sunrise is at 07:08 on the 18th and 07:08 on the 19th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16084 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Abu Dhabi, 1997: Sunday 19 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Putradā Ekādaśī 1997 falls on Sunday 19 January. Ekādaśī runs from 11:36 on Sat 18 Jan to 12:21 on Sun 19 Jan and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-01-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-01-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10486, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-01-20T13:31:32+04:00", "utc": "1997-01-20T09:31:32Z", "ms": 853752691817.3962 }, "end": { "local": "1997-01-21T15:05:02+04:00", "utc": "1997-01-21T11:05:02Z", "ms": 853844702220.3771 }, "month": { "amanta": 9, "purnimanta": 9, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-01-20T13:31:32+04:00", "utc": "1997-01-20T09:31:32Z", "ms": 853752691817.3962 }, "end": { "local": "1997-01-21T15:05:02+04:00", "utc": "1997-01-21T11:05:02Z", "ms": 853844702220.3771 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-01-20", "window": { "start": { "local": "1997-01-20T17:59:04+04:00", "utc": "1997-01-20T13:59:04Z", "ms": 853768744230.7029 }, "end": { "local": "1997-01-20T19:44:15+04:00", "utc": "1997-01-20T15:44:15Z", "ms": 853775054930.6443 } }, "covered_min": 105, "window_min": 105, "qualifies": true }, { "local_date": "1997-01-21", "window": { "start": { "local": "1997-01-21T17:59:49+04:00", "utc": "1997-01-21T13:59:49Z", "ms": 853855188551.4719 }, "end": { "local": "1997-01-21T19:44:52+04:00", "utc": "1997-01-21T15:44:52Z", "ms": 853861491830.929 } }, "covered_min": 0, "window_min": 105, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 13:32 on Mon 20 Jan to 15:05 on Tue 21 Jan.", "fact": "1997-01-20T09:31:32Z → 1997-01-21T11:05:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:59–19:44 on the 20th, 18:00–19:45 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 105 of 105 minutes on the 20th and 0 of 105 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10486 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Monday 20 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-20", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Monday 20 January. Trayodaśī runs from 13:32 on Mon 20 Jan to 15:05 on Tue 21 Jan and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-01-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-01-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-01-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23203, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-01-27T02:58:25+04:00", "utc": "1997-01-26T22:58:25Z", "ms": 854319504854.6635 }, "end": { "local": "1997-01-28T05:37:09+04:00", "utc": "1997-01-28T01:37:09Z", "ms": 854415428822.2317 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-01-27T02:58:25+04:00", "utc": "1997-01-26T22:58:25Z", "ms": 854319504854.6635 }, "end": { "local": "1997-01-28T05:37:09+04:00", "utc": "1997-01-28T01:37:09Z", "ms": 854415428822.2317 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-01-26", "window": { "start": { "local": "1997-01-26T20:31:42+04:00", "utc": "1997-01-26T16:31:42Z", "ms": 854296302266.0182 }, "end": { "local": "1997-01-26T20:31:42+04:00", "utc": "1997-01-26T16:31:42Z", "ms": 854296302266.0182 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-01-27", "window": { "start": { "local": "1997-01-27T21:21:20+04:00", "utc": "1997-01-27T17:21:20Z", "ms": 854385679509.7452 }, "end": { "local": "1997-01-27T21:21:20+04:00", "utc": "1997-01-27T17:21:20Z", "ms": 854385679509.7452 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:58 on Mon 27 Jan to 05:37 on Tue 28 Jan.", "fact": "1997-01-26T22:58:25Z → 1997-01-28T01:37:09Z" }, { "step": "kaala", "text": "Moonrise is at 20:32 on the 26th and 21:21 on the 27th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23203 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Monday 27 January.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-01-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-01-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Monday 27 January. Caturthī runs from 02:58 on Mon 27 Jan to 05:37 on Tue 28 Jan and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-01-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-02-04", "festival": "ekadashi", "name": "Ṣaṭtilā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4804, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-02-03T10:21:53+04:00", "utc": "1997-02-03T06:21:53Z", "ms": 854950913128.4929 }, "end": { "local": "1997-02-04T08:23:14+04:00", "utc": "1997-02-04T04:23:14Z", "ms": 855030194186.4832 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-03T10:21:53+04:00", "utc": "1997-02-03T06:21:53Z", "ms": 854950913128.4929 }, "end": { "local": "1997-02-04T08:23:14+04:00", "utc": "1997-02-04T04:23:14Z", "ms": 855030194186.4832 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-02-03", "window": { "start": { "local": "1997-02-03T07:03:39+04:00", "utc": "1997-02-03T03:03:39Z", "ms": 854939018802.3761 }, "end": { "local": "1997-02-03T07:03:39+04:00", "utc": "1997-02-03T03:03:39Z", "ms": 854939018802.3761 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-02-04", "window": { "start": { "local": "1997-02-04T07:03:10+04:00", "utc": "1997-02-04T03:03:10Z", "ms": 855025389885.373 }, "end": { "local": "1997-02-04T07:03:10+04:00", "utc": "1997-02-04T03:03:10Z", "ms": 855025389885.373 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 10:22 on Mon 3 Feb to 08:23 on Tue 4 Feb.", "fact": "1997-02-03T06:21:53Z → 1997-02-04T04:23:14Z" }, { "step": "kaala", "text": "Sunrise is at 07:04 on the 3rd and 07:03 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 4804 s" }, { "step": "ruling", "text": "Ṣaṭtilā Ekādaśī, Abu Dhabi, 1997: Tuesday 4 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-04", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ṣaṭtilā Ekādaśī 1997 falls on Tuesday 4 February. Ekādaśī runs from 10:22 on Mon 3 Feb to 08:23 on Tue 4 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-02-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-02-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23771, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-02-05T05:42:50+04:00", "utc": "1997-02-05T01:42:50Z", "ms": 855106969603.0015 }, "end": { "local": "1997-02-06T02:29:34+04:00", "utc": "1997-02-05T22:29:34Z", "ms": 855181773740.2566 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-05T05:42:50+04:00", "utc": "1997-02-05T01:42:50Z", "ms": 855106969603.0015 }, "end": { "local": "1997-02-06T02:29:34+04:00", "utc": "1997-02-05T22:29:34Z", "ms": 855181773740.2566 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-02-04", "window": { "start": { "local": "1997-02-04T18:09:49+04:00", "utc": "1997-02-04T14:09:49Z", "ms": 855065389028.6371 }, "end": { "local": "1997-02-04T19:52:52+04:00", "utc": "1997-02-04T15:52:52Z", "ms": 855071571789.1818 } }, "covered_min": 0, "window_min": 103, "qualifies": false }, { "local_date": "1997-02-05", "window": { "start": { "local": "1997-02-05T18:10:30+04:00", "utc": "1997-02-05T14:10:30Z", "ms": 855151829750.9622 }, "end": { "local": "1997-02-05T19:53:23+04:00", "utc": "1997-02-05T15:53:23Z", "ms": 855158002899.0101 } }, "covered_min": 103, "window_min": 103, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 05:43 on Wed 5 Feb to 02:30 on Thu 6 Feb.", "fact": "1997-02-05T01:42:50Z → 1997-02-05T22:29:34Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:10–19:53 on the 4th, 18:10–19:53 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 103 minutes on the 4th and 103 of 103 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23771 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Wednesday 5 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Wednesday 5 February. Trayodaśī runs from 05:43 on Wed 5 Feb to 02:30 on Thu 6 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-02-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-05", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 4719, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-02-06T02:29:34+04:00", "utc": "1997-02-05T22:29:34Z", "ms": 855181773740.2566 }, "end": { "local": "1997-02-06T22:53:44+04:00", "utc": "1997-02-06T18:53:44Z", "ms": 855255223536.8408 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-06T02:29:34+04:00", "utc": "1997-02-05T22:29:34Z", "ms": 855181773740.2566 }, "end": { "local": "1997-02-06T22:53:44+04:00", "utc": "1997-02-06T18:53:44Z", "ms": 855255223536.8408 } }, "kaala": "nishita", "days": [ { "local_date": "1997-02-05", "window": { "start": { "local": "1997-02-06T00:12:19+04:00", "utc": "1997-02-05T20:12:19Z", "ms": 855173539056.1421 }, "end": { "local": "1997-02-06T01:00:19+04:00", "utc": "1997-02-05T21:00:19Z", "ms": 855176419056.1421 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-02-06", "window": { "start": { "local": "1997-02-07T00:12:23+04:00", "utc": "1997-02-06T20:12:23Z", "ms": 855259942941.603 }, "end": { "local": "1997-02-07T01:00:23+04:00", "utc": "1997-02-06T21:00:23Z", "ms": 855262822941.603 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:30 on Thu 6 Feb to 22:54 on Thu 6 Feb.", "fact": "1997-02-05T22:29:34Z → 1997-02-06T18:53:44Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:12–01:00 on the 5th, 00:12–01:00 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither night qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 4719 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Wednesday 5 February.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-05", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-05", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Wednesday 5 February. Caturdaśī runs from 02:30 on Thu 6 Feb to 22:54 on Thu 6 Feb, and reaches niśītha on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-02-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/yama-tarpana", "festival": "yama-tarpana", "name": "Yama Tarpaṇa", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10181, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-02-06T02:29:34+04:00", "utc": "1997-02-05T22:29:34Z", "ms": 855181773740.2566 }, "end": { "local": "1997-02-06T22:53:44+04:00", "utc": "1997-02-06T18:53:44Z", "ms": 855255223536.8408 }, "month": { "amanta": 9, "purnimanta": 10, "adhika": false, "amanta_name": "Pauṣa", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-06T02:29:34+04:00", "utc": "1997-02-05T22:29:34Z", "ms": 855181773740.2566 }, "end": { "local": "1997-02-06T22:53:44+04:00", "utc": "1997-02-06T18:53:44Z", "ms": 855255223536.8408 } }, "kaala": "arunodaya", "days": [ { "local_date": "1997-02-06", "window": { "start": { "local": "1997-02-06T05:19:15+04:00", "utc": "1997-02-06T01:19:15Z", "ms": 855191955213.2742 }, "end": { "local": "1997-02-06T07:02:08+04:00", "utc": "1997-02-06T03:02:08Z", "ms": 855198128361.3221 } }, "covered_min": 103, "window_min": 103, "qualifies": true }, { "local_date": "1997-02-07", "window": { "start": { "local": "1997-02-07T05:18:52+04:00", "utc": "1997-02-07T01:18:52Z", "ms": 855278332361.8914 }, "end": { "local": "1997-02-07T07:01:36+04:00", "utc": "1997-02-07T03:01:36Z", "ms": 855284495787.4508 } }, "covered_min": 0, "window_min": 103, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 02:30 on Thu 6 Feb to 22:54 on Thu 6 Feb.", "fact": "1997-02-05T22:29:34Z → 1997-02-06T18:53:44Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:19–07:02 on the 6th, 05:19–07:02 on the 7th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 103 of 103 minutes on the 6th and 0 of 103 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10181 s" }, { "step": "ruling", "text": "Yama Tarpaṇa, Abu Dhabi, 1997: Thursday 6 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Yama tarpana (covering a period of 4 ghatikas before sunrise)" } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Yama Tarpaṇa 1997 falls on Thursday 6 February. Caturdaśī runs from 02:30 on Thu 6 Feb to 22:54 on Thu 6 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/yama-tarpana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ganesha-jayanti", "festival": "ganesha-jayanti", "name": "Gaṇeśa Jayantī", "everyday": "Maghi Ganesh Jayanti", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13809, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-02-10T08:22:41+04:00", "utc": "1997-02-10T04:22:41Z", "ms": 855548560606.1189 }, "end": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-10T08:22:41+04:00", "utc": "1997-02-10T04:22:41Z", "ms": 855548560606.1189 }, "end": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-02-10", "window": { "start": { "local": "1997-02-10T12:12:49+04:00", "utc": "1997-02-10T08:12:49Z", "ms": 855562369199.2012 }, "end": { "local": "1997-02-10T13:00:49+04:00", "utc": "1997-02-10T09:00:49Z", "ms": 855565249199.2012 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-02-11", "window": { "start": { "local": "1997-02-11T12:12:50+04:00", "utc": "1997-02-11T08:12:50Z", "ms": 855648769706.4775 }, "end": { "local": "1997-02-11T13:00:50+04:00", "utc": "1997-02-11T09:00:50Z", "ms": 855651649706.4775 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:23 on Mon 10 Feb to 05:34 on Tue 11 Feb.", "fact": "1997-02-10T04:22:41Z → 1997-02-11T01:34:02Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 10th, 12:13–13:01 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 13809 s" }, { "step": "ruling", "text": "Gaṇeśa Jayantī, Abu Dhabi, 1997: Monday 10 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Gaṇeśa Jayantī (Maghi Ganesh Jayanti) 1997 falls on Monday 10 February. Caturthī runs from 08:23 on Mon 10 Feb to 05:34 on Tue 11 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ganesha-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/tila-chaturthi", "festival": "tila-chaturthi", "name": "Tila Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34691, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-02-10T08:22:41+04:00", "utc": "1997-02-10T04:22:41Z", "ms": 855548560606.1189 }, "end": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-10T08:22:41+04:00", "utc": "1997-02-10T04:22:41Z", "ms": 855548560606.1189 }, "end": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-02-09", "window": { "start": { "local": "1997-02-09T18:13:09+04:00", "utc": "1997-02-09T14:13:09Z", "ms": 855497588705.8829 }, "end": { "local": "1997-02-09T19:55:22+04:00", "utc": "1997-02-09T15:55:22Z", "ms": 855503722346.5702 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "1997-02-10", "window": { "start": { "local": "1997-02-10T18:13:47+04:00", "utc": "1997-02-10T14:13:47Z", "ms": 855584027387.3646 }, "end": { "local": "1997-02-10T19:55:51+04:00", "utc": "1997-02-10T15:55:51Z", "ms": 855590150907.7803 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:23 on Mon 10 Feb to 05:34 on Tue 11 Feb.", "fact": "1997-02-10T04:22:41Z → 1997-02-11T01:34:02Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:13–19:55 on the 9th, 18:14–19:56 on the 10th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during pradoṣa. It covers 0 of 102 minutes on the 9th and 102 of 102 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34691 s" }, { "step": "ruling", "text": "Tila Caturthī, Abu Dhabi, 1997: Monday 10 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "tila-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Tila caturthi and Kunda caturthi (pradosavyapini), Varada caturthi (Bengal & Orissa), Ganesa caturthi, Ganesa jayanti (madhyahnavyapini purvaviddha)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Tila Caturthī 1997 falls on Monday 10 February. Caturthī runs from 08:23 on Mon 10 Feb to 05:34 on Tue 11 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/tila-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shri-panchami", "festival": "shri-panchami", "name": "Śrī Pañcamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23928, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 }, "end": { "local": "1997-02-12T03:21:43+04:00", "utc": "1997-02-11T23:21:43Z", "ms": 855703302607.2767 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 }, "end": { "local": "1997-02-12T03:21:43+04:00", "utc": "1997-02-11T23:21:43Z", "ms": 855703302607.2767 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-02-11", "window": { "start": { "local": "1997-02-11T12:12:50+04:00", "utc": "1997-02-11T08:12:50Z", "ms": 855648769706.4775 }, "end": { "local": "1997-02-11T13:00:50+04:00", "utc": "1997-02-11T09:00:50Z", "ms": 855651649706.4775 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-02-12", "window": { "start": { "local": "1997-02-12T12:12:49+04:00", "utc": "1997-02-12T08:12:49Z", "ms": 855735169428.7646 }, "end": { "local": "1997-02-12T13:00:49+04:00", "utc": "1997-02-12T09:00:49Z", "ms": 855738049428.7646 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:34 on Tue 11 Feb to 03:22 on Wed 12 Feb.", "fact": "1997-02-11T01:34:02Z → 1997-02-11T23:21:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 11th, 12:13–13:01 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 23928 s" }, { "step": "ruling", "text": "Śrī Pañcamī, Abu Dhabi, 1997: Tuesday 11 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śrī Pañcamī 1997 falls on Tuesday 11 February. Pañcamī runs from 05:34 on Tue 11 Feb to 03:22 on Wed 12 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shri-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vasanta-panchami", "festival": "vasanta-panchami", "name": "Vasanta Pañcamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23928, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 }, "end": { "local": "1997-02-12T03:21:43+04:00", "utc": "1997-02-11T23:21:43Z", "ms": 855703302607.2767 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-11T05:34:02+04:00", "utc": "1997-02-11T01:34:02Z", "ms": 855624842178.7228 }, "end": { "local": "1997-02-12T03:21:43+04:00", "utc": "1997-02-11T23:21:43Z", "ms": 855703302607.2767 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-02-11", "window": { "start": { "local": "1997-02-11T12:12:50+04:00", "utc": "1997-02-11T08:12:50Z", "ms": 855648769706.4775 }, "end": { "local": "1997-02-11T13:00:50+04:00", "utc": "1997-02-11T09:00:50Z", "ms": 855651649706.4775 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-02-12", "window": { "start": { "local": "1997-02-12T12:12:49+04:00", "utc": "1997-02-12T08:12:49Z", "ms": 855735169428.7646 }, "end": { "local": "1997-02-12T13:00:49+04:00", "utc": "1997-02-12T09:00:49Z", "ms": 855738049428.7646 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:34 on Tue 11 Feb to 03:22 on Wed 12 Feb.", "fact": "1997-02-11T01:34:02Z → 1997-02-11T23:21:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 11th, 12:13–13:01 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23928 s" }, { "step": "ruling", "text": "Vasanta Pañcamī, Abu Dhabi, 1997: Tuesday 11 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasanta-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri Pancami (purvaviddha), Sarasvati puja (Bengal), Vasanta pancami, Madana pancami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vasanta Pañcamī 1997 falls on Tuesday 11 February. Pañcamī runs from 05:34 on Tue 11 Feb to 03:22 on Wed 12 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vasanta-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ratha-saptami", "festival": "ratha-saptami", "name": "Ratha Saptamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12320, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-02-13T01:50:53+04:00", "utc": "1997-02-12T21:50:53Z", "ms": 855784252813.216 }, "end": { "local": "1997-02-14T01:04:13+04:00", "utc": "1997-02-13T21:04:13Z", "ms": 855867853237.2559 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-13T01:50:53+04:00", "utc": "1997-02-12T21:50:53Z", "ms": 855784252813.216 }, "end": { "local": "1997-02-14T01:04:13+04:00", "utc": "1997-02-13T21:04:13Z", "ms": 855867853237.2559 } }, "kaala": "arunodaya", "days": [ { "local_date": "1997-02-13", "window": { "start": { "local": "1997-02-13T05:16:13+04:00", "utc": "1997-02-13T01:16:13Z", "ms": 855796573007.5557 }, "end": { "local": "1997-02-13T06:57:56+04:00", "utc": "1997-02-13T02:57:56Z", "ms": 855802676023.5791 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "1997-02-14", "window": { "start": { "local": "1997-02-14T05:15:43+04:00", "utc": "1997-02-14T01:15:43Z", "ms": 855882942882.3584 }, "end": { "local": "1997-02-14T06:57:16+04:00", "utc": "1997-02-14T02:57:16Z", "ms": 855889035522.0063 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 01:51 on Thu 13 Feb to 01:04 on Fri 14 Feb.", "fact": "1997-02-12T21:50:53Z → 1997-02-13T21:04:13Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 05:16–06:58 on the 13th, 05:16–06:57 on the 14th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during aruṇodaya. It covers 102 of 102 minutes on the 13th and 0 of 102 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 12320 s" }, { "step": "ruling", "text": "Ratha Saptamī, Abu Dhabi, 1997: Thursday 13 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ratha-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Ratha saptami (covering 4 ghatikas before sunrise), Acala saptami, Vidhana saptami, Arogya saptami [purvaviddha]." } ], "kaala": "arunodaya", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ratha Saptamī 1997 falls on Thursday 13 February. Saptamī runs from 01:51 on Thu 13 Feb to 01:04 on Fri 14 Feb and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ratha-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-02-17", "festival": "ekadashi", "name": "Jayā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8003, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-02-17T02:55:43+04:00", "utc": "1997-02-16T22:55:43Z", "ms": 856133742903.6681 }, "end": { "local": "1997-02-18T04:41:00+04:00", "utc": "1997-02-18T00:41:00Z", "ms": 856226460450.7809 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-17T02:55:43+04:00", "utc": "1997-02-16T22:55:43Z", "ms": 856133742903.6681 }, "end": { "local": "1997-02-18T04:41:00+04:00", "utc": "1997-02-18T00:41:00Z", "ms": 856226460450.7809 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-02-17", "window": { "start": { "local": "1997-02-17T06:55:08+04:00", "utc": "1997-02-17T02:55:08Z", "ms": 856148107840.4913 }, "end": { "local": "1997-02-17T06:55:08+04:00", "utc": "1997-02-17T02:55:08Z", "ms": 856148107840.4913 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-02-18", "window": { "start": { "local": "1997-02-18T06:54:23+04:00", "utc": "1997-02-18T02:54:23Z", "ms": 856234463308.5157 }, "end": { "local": "1997-02-18T06:54:23+04:00", "utc": "1997-02-18T02:54:23Z", "ms": 856234463308.5157 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:56 on Mon 17 Feb to 04:41 on Tue 18 Feb.", "fact": "1997-02-16T22:55:43Z → 1997-02-18T00:41:00Z" }, { "step": "kaala", "text": "Sunrise is at 06:55 on the 17th and 06:54 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8003 s" }, { "step": "ruling", "text": "Jayā Ekādaśī, Abu Dhabi, 1997: Monday 17 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-17", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Jayā Ekādaśī 1997 falls on Monday 17 February. Ekādaśī runs from 02:56 on Mon 17 Feb to 04:41 on Tue 18 Feb and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-02-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/bhishma-dvadashi", "festival": "bhishma-dvadashi", "name": "Bhīṣma Dvādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19384, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-02-18T04:41:00+04:00", "utc": "1997-02-18T00:41:00Z", "ms": 856226460450.7809 }, "end": { "local": "1997-02-19T06:49:23+04:00", "utc": "1997-02-19T02:49:23Z", "ms": 856320562596.5138 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-18T04:41:00+04:00", "utc": "1997-02-18T00:41:00Z", "ms": 856226460450.7809 }, "end": { "local": "1997-02-19T06:49:23+04:00", "utc": "1997-02-19T02:49:23Z", "ms": 856320562596.5138 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-02-18", "window": { "start": { "local": "1997-02-18T12:12:32+04:00", "utc": "1997-02-18T08:12:32Z", "ms": 856253551844.686 }, "end": { "local": "1997-02-18T13:00:32+04:00", "utc": "1997-02-18T09:00:32Z", "ms": 856256431844.686 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-02-19", "window": { "start": { "local": "1997-02-19T12:12:26+04:00", "utc": "1997-02-19T08:12:26Z", "ms": 856339946385.095 }, "end": { "local": "1997-02-19T13:00:26+04:00", "utc": "1997-02-19T09:00:26Z", "ms": 856342826385.095 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 04:41 on Tue 18 Feb to 06:49 on Wed 19 Feb.", "fact": "1997-02-18T00:41:00Z → 1997-02-19T02:49:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:13–13:01 on the 18th, 12:12–13:00 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 0 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19384 s" }, { "step": "ruling", "text": "Bhīṣma Dvādaśī, Abu Dhabi, 1997: Tuesday 18 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhishma-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Bhisma dvadasi (purvaviddha), Amalaki dvadasi, Santana dvadasi, Varaha dvadasi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Bhīṣma Dvādaśī 1997 falls on Tuesday 18 February. Dvādaśī runs from 04:41 on Tue 18 Feb to 06:49 on Wed 19 Feb and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/bhishma-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-02-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32751, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-02-19T06:49:23+04:00", "utc": "1997-02-19T02:49:23Z", "ms": 856320562596.5138 }, "end": { "local": "1997-02-20T09:13:58+04:00", "utc": "1997-02-20T05:13:58Z", "ms": 856415637677.9194 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-19T06:49:23+04:00", "utc": "1997-02-19T02:49:23Z", "ms": 856320562596.5138 }, "end": { "local": "1997-02-20T09:13:58+04:00", "utc": "1997-02-20T05:13:58Z", "ms": 856415637677.9194 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-02-19", "window": { "start": { "local": "1997-02-19T18:19:15+04:00", "utc": "1997-02-19T14:19:15Z", "ms": 856361954934.0464 }, "end": { "local": "1997-02-19T19:59:44+04:00", "utc": "1997-02-19T15:59:44Z", "ms": 856367983803.0139 } }, "covered_min": 100, "window_min": 100, "qualifies": true }, { "local_date": "1997-02-20", "window": { "start": { "local": "1997-02-20T18:19:49+04:00", "utc": "1997-02-20T14:19:49Z", "ms": 856448389038.2313 }, "end": { "local": "1997-02-20T20:00:07+04:00", "utc": "1997-02-20T16:00:07Z", "ms": 856454407057.4395 } }, "covered_min": 0, "window_min": 100, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 06:49 on Wed 19 Feb to 09:14 on Thu 20 Feb.", "fact": "1997-02-19T02:49:23Z → 1997-02-20T05:13:58Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:19–20:00 on the 19th, 18:20–20:00 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 100 of 100 minutes on the 19th and 0 of 100 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32751 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Wednesday 19 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Wednesday 19 February. Trayodaśī runs from 06:49 on Wed 19 Feb to 09:14 on Thu 20 Feb and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-02-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/maghi-purnima", "festival": "maghi-purnima", "name": "Māghī Pūrṇimā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1431, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-02-21T11:48:22+04:00", "utc": "1997-02-21T07:48:22Z", "ms": 856511302354.7367 }, "end": { "local": "1997-02-22T14:26:40+04:00", "utc": "1997-02-22T10:26:40Z", "ms": 856607199951.1262 }, "month": { "amanta": 10, "purnimanta": 10, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Māgha" } }, "span": { "of": "tithi", "start": { "local": "1997-02-21T11:48:22+04:00", "utc": "1997-02-21T07:48:22Z", "ms": 856511302354.7367 }, "end": { "local": "1997-02-22T14:26:40+04:00", "utc": "1997-02-22T10:26:40Z", "ms": 856607199951.1262 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-02-21", "window": { "start": { "local": "1997-02-21T12:12:13+04:00", "utc": "1997-02-21T08:12:13Z", "ms": 856512733441.2322 }, "end": { "local": "1997-02-21T13:00:13+04:00", "utc": "1997-02-21T09:00:13Z", "ms": 856515613441.2322 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-02-22", "window": { "start": { "local": "1997-02-22T12:12:06+04:00", "utc": "1997-02-22T08:12:06Z", "ms": 856599125992.6661 }, "end": { "local": "1997-02-22T13:00:06+04:00", "utc": "1997-02-22T09:00:06Z", "ms": 856602005992.6661 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "paraviddha", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 11:48 on Fri 21 Feb to 14:27 on Sat 22 Feb.", "fact": "1997-02-21T07:48:22Z → 1997-02-22T10:26:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:12–13:00 on the 21st, 12:12–13:00 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Both middays qualify. Paraviddhā: the second is taken.", "fact": "priority: paraviddha → paraviddha · margin 1431 s" }, { "step": "ruling", "text": "Māghī Pūrṇimā, Abu Dhabi, 1997: Saturday 22 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maghi-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Maghi purnima (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-22", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Māghī Pūrṇimā 1997 falls on Saturday 22 February. Pūrṇimā runs from 11:48 on Fri 21 Feb to 14:27 on Sat 22 Feb and covers all of madhyāhna that midday. It also reaches the previous midday for 48 minutes; by the rule the second midday is taken.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/maghi-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-02-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-02-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2827, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-02-25T21:44:57+04:00", "utc": "1997-02-25T17:44:57Z", "ms": 856892696808.3223 }, "end": { "local": "1997-02-26T23:36:38+04:00", "utc": "1997-02-26T19:36:38Z", "ms": 856985797505.5719 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-02-25T21:44:57+04:00", "utc": "1997-02-25T17:44:57Z", "ms": 856892696808.3223 }, "end": { "local": "1997-02-26T23:36:38+04:00", "utc": "1997-02-26T19:36:38Z", "ms": 856985797505.5719 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-02-25", "window": { "start": { "local": "1997-02-25T20:57:50+04:00", "utc": "1997-02-25T16:57:50Z", "ms": 856889869596.6604 }, "end": { "local": "1997-02-25T20:57:50+04:00", "utc": "1997-02-25T16:57:50Z", "ms": 856889869596.6604 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-02-26", "window": { "start": { "local": "1997-02-26T21:49:04+04:00", "utc": "1997-02-26T17:49:04Z", "ms": 856979343649.3682 }, "end": { "local": "1997-02-26T21:49:04+04:00", "utc": "1997-02-26T17:49:04Z", "ms": 856979343649.3682 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:45 on Tue 25 Feb to 23:37 on Wed 26 Feb.", "fact": "1997-02-25T17:44:57Z → 1997-02-26T19:36:38Z" }, { "step": "kaala", "text": "Moonrise is at 20:58 on the 25th and 21:49 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2827 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Wednesday 26 February.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-02-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-02-26", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Wednesday 26 February. Caturthī runs from 21:45 on Tue 25 Feb to 23:37 on Wed 26 Feb and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-02-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-03-05", "festival": "ekadashi", "name": "Vijayā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32028, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-03-04T21:47:51+04:00", "utc": "1997-03-04T17:47:51Z", "ms": 857497670769.5719 }, "end": { "local": "1997-03-05T19:08:56+04:00", "utc": "1997-03-05T15:08:56Z", "ms": 857574536019.7135 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-04T21:47:51+04:00", "utc": "1997-03-04T17:47:51Z", "ms": 857497670769.5719 }, "end": { "local": "1997-03-05T19:08:56+04:00", "utc": "1997-03-05T15:08:56Z", "ms": 857574536019.7135 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-03-05", "window": { "start": { "local": "1997-03-05T06:41:39+04:00", "utc": "1997-03-05T02:41:39Z", "ms": 857529698513.6514 }, "end": { "local": "1997-03-05T06:41:39+04:00", "utc": "1997-03-05T02:41:39Z", "ms": 857529698513.6514 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-03-06", "window": { "start": { "local": "1997-03-06T06:40:42+04:00", "utc": "1997-03-06T02:40:42Z", "ms": 857616042372.3619 }, "end": { "local": "1997-03-06T06:40:42+04:00", "utc": "1997-03-06T02:40:42Z", "ms": 857616042372.3619 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 21:48 on Tue 4 Mar to 19:09 on Wed 5 Mar.", "fact": "1997-03-04T17:47:51Z → 1997-03-05T15:08:56Z" }, { "step": "kaala", "text": "Sunrise is at 06:42 on the 5th and 06:41 on the 6th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 5th and is not on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32028 s" }, { "step": "ruling", "text": "Vijayā Ekādaśī, Abu Dhabi, 1997: Wednesday 5 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vijayā Ekādaśī 1997 falls on Wednesday 5 March. Ekādaśī runs from 21:48 on Tue 4 Mar to 19:09 on Wed 5 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-03-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-03-06", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8749, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-03-06T16:01:15+04:00", "utc": "1997-03-06T12:01:15Z", "ms": 857649675436.6733 }, "end": { "local": "1997-03-07T12:33:18+04:00", "utc": "1997-03-07T08:33:18Z", "ms": 857723598340.4988 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-06T16:01:15+04:00", "utc": "1997-03-06T12:01:15Z", "ms": 857649675436.6733 }, "end": { "local": "1997-03-07T12:33:18+04:00", "utc": "1997-03-07T08:33:18Z", "ms": 857723598340.4988 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-03-06", "window": { "start": { "local": "1997-03-06T18:27:04+04:00", "utc": "1997-03-06T14:27:04Z", "ms": 857658424371.8416 }, "end": { "local": "1997-03-06T20:04:46+04:00", "utc": "1997-03-06T16:04:46Z", "ms": 857664285887.6573 } }, "covered_min": 98, "window_min": 98, "qualifies": true }, { "local_date": "1997-03-07", "window": { "start": { "local": "1997-03-07T18:27:33+04:00", "utc": "1997-03-07T14:27:33Z", "ms": 857744852861.476 }, "end": { "local": "1997-03-07T20:05:03+04:00", "utc": "1997-03-07T16:05:03Z", "ms": 857750702965.554 } }, "covered_min": 0, "window_min": 98, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 16:01 on Thu 6 Mar to 12:33 on Fri 7 Mar.", "fact": "1997-03-06T12:01:15Z → 1997-03-07T08:33:18Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–20:05 on the 6th, 18:28–20:05 on the 7th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 98 of 98 minutes on the 6th and 0 of 98 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8749 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Thursday 6 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Thursday 6 March. Trayodaśī runs from 16:01 on Thu 6 Mar to 12:33 on Fri 7 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-03-06", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/maha-shivaratri", "festival": "maha-shivaratri", "name": "Mahāśivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28637, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-03-07T12:33:18+04:00", "utc": "1997-03-07T08:33:18Z", "ms": 857723598340.4988 }, "end": { "local": "1997-03-08T08:54:28+04:00", "utc": "1997-03-08T04:54:28Z", "ms": 857796867585.9803 }, "month": { "amanta": 10, "purnimanta": 11, "adhika": false, "amanta_name": "Māgha", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-07T12:33:18+04:00", "utc": "1997-03-07T08:33:18Z", "ms": 857723598340.4988 }, "end": { "local": "1997-03-08T08:54:28+04:00", "utc": "1997-03-08T04:54:28Z", "ms": 857796867585.9803 } }, "kaala": "nishita", "days": [ { "local_date": "1997-03-06", "window": { "start": { "local": "1997-03-07T00:09:25+04:00", "utc": "1997-03-06T20:09:25Z", "ms": 857678965056.1509 }, "end": { "local": "1997-03-07T00:57:25+04:00", "utc": "1997-03-06T20:57:25Z", "ms": 857681845056.1509 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-03-07", "window": { "start": { "local": "1997-03-08T00:09:11+04:00", "utc": "1997-03-07T20:09:11Z", "ms": 857765350751.7683 }, "end": { "local": "1997-03-08T00:57:11+04:00", "utc": "1997-03-07T20:57:11Z", "ms": 857768230751.7683 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 12:33 on Fri 7 Mar to 08:54 on Sat 8 Mar.", "fact": "1997-03-07T08:33:18Z → 1997-03-08T04:54:28Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:09–00:57 on the 6th, 00:09–00:57 on the 7th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 28637 s" }, { "step": "ruling", "text": "Mahāśivarātri, Abu Dhabi, 1997: Friday 7 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "maha-shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Mahasivaratri (nisithavyapini) — In some opinion it is to be observed on nisitha and in some opinion on pradosa. If occurs on two successive nisithas then according to Hemadri it is to be observed on the first day and according to Madhava, to be observed on the second day" } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "disputed", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-07", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mahāśivarātri 1997 falls on Friday 7 March. Caturdaśī runs from 12:33 on Fri 7 Mar to 08:54 on Sat 8 Mar and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/maha-shivaratri", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-03-12", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16966, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-03-11T19:47:16+04:00", "utc": "1997-03-11T15:47:16Z", "ms": 858095235828.4911 }, "end": { "local": "1997-03-12T17:39:09+04:00", "utc": "1997-03-12T13:39:09Z", "ms": 858173949051.3428 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-11T19:47:16+04:00", "utc": "1997-03-11T15:47:16Z", "ms": 858095235828.4911 }, "end": { "local": "1997-03-12T17:39:09+04:00", "utc": "1997-03-12T13:39:09Z", "ms": 858173949051.3428 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-03-11", "window": { "start": { "local": "1997-03-11T12:08:39+04:00", "utc": "1997-03-11T08:08:39Z", "ms": 858067719324.563 }, "end": { "local": "1997-03-11T12:56:39+04:00", "utc": "1997-03-11T08:56:39Z", "ms": 858070599324.563 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-03-12", "window": { "start": { "local": "1997-03-12T12:08:23+04:00", "utc": "1997-03-12T08:08:23Z", "ms": 858154103481.677 }, "end": { "local": "1997-03-12T12:56:23+04:00", "utc": "1997-03-12T08:56:23Z", "ms": 858156983481.677 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:47 on Tue 11 Mar to 17:39 on Wed 12 Mar.", "fact": "1997-03-11T15:47:16Z → 1997-03-12T13:39:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:09–12:57 on the 11th, 12:08–12:56 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 11th and 48 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16966 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Wednesday 12 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-12", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Wednesday 12 March. Caturthī runs from 19:47 on Tue 11 Mar to 17:39 on Wed 12 Mar and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-03-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-03-19", "festival": "ekadashi", "name": "Āmalakī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27548, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-03-18T20:20:29+04:00", "utc": "1997-03-18T16:20:29Z", "ms": 858702028913.1813 }, "end": { "local": "1997-03-19T22:47:48+04:00", "utc": "1997-03-19T18:47:48Z", "ms": 858797267676.6976 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-18T20:20:29+04:00", "utc": "1997-03-18T16:20:29Z", "ms": 858702028913.1813 }, "end": { "local": "1997-03-19T22:47:48+04:00", "utc": "1997-03-19T18:47:48Z", "ms": 858797267676.6976 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-03-19", "window": { "start": { "local": "1997-03-19T06:27:56+04:00", "utc": "1997-03-19T02:27:56Z", "ms": 858738476469.2925 }, "end": { "local": "1997-03-19T06:27:56+04:00", "utc": "1997-03-19T02:27:56Z", "ms": 858738476469.2925 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-03-20", "window": { "start": { "local": "1997-03-20T06:26:56+04:00", "utc": "1997-03-20T02:26:56Z", "ms": 858824815659.2825 }, "end": { "local": "1997-03-20T06:26:56+04:00", "utc": "1997-03-20T02:26:56Z", "ms": 858824815659.2825 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 20:20 on Tue 18 Mar to 22:48 on Wed 19 Mar.", "fact": "1997-03-18T16:20:29Z → 1997-03-19T18:47:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:28 on the 19th and 06:27 on the 20th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27548 s" }, { "step": "ruling", "text": "Āmalakī Ekādaśī, Abu Dhabi, 1997: Wednesday 19 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Āmalakī Ekādaśī 1997 falls on Wednesday 19 March. Ekādaśī runs from 20:20 on Tue 18 Mar to 22:48 on Wed 19 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-03-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-03-21", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19013, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-03-21T01:25:13+04:00", "utc": "1997-03-20T21:25:13Z", "ms": 858893113122.2034 }, "end": { "local": "1997-03-22T04:02:39+04:00", "utc": "1997-03-22T00:02:39Z", "ms": 858988959276.9434 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-21T01:25:13+04:00", "utc": "1997-03-20T21:25:13Z", "ms": 858893113122.2034 }, "end": { "local": "1997-03-22T04:02:39+04:00", "utc": "1997-03-22T00:02:39Z", "ms": 858988959276.9434 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-03-20", "window": { "start": { "local": "1997-03-20T18:33:19+04:00", "utc": "1997-03-20T14:33:19Z", "ms": 858868398971.8287 }, "end": { "local": "1997-03-20T20:08:20+04:00", "utc": "1997-03-20T16:08:20Z", "ms": 858874099737.7274 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1997-03-21", "window": { "start": { "local": "1997-03-21T18:33:44+04:00", "utc": "1997-03-21T14:33:44Z", "ms": 858954824145.2935 }, "end": { "local": "1997-03-21T20:08:33+04:00", "utc": "1997-03-21T16:08:33Z", "ms": 858960513415.0612 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 01:25 on Fri 21 Mar to 04:03 on Sat 22 Mar.", "fact": "1997-03-20T21:25:13Z → 1997-03-22T00:02:39Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:33–20:08 on the 20th, 18:34–20:09 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 95 minutes on the 20th and 95 of 95 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19013 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Friday 21 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-21", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Friday 21 March. Trayodaśī runs from 01:25 on Fri 21 Mar to 04:03 on Sat 22 Mar and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-03-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/holika-dahana", "festival": "holika-dahana", "name": "Holikā Dahana", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26599, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-03-23T06:31:34+04:00", "utc": "1997-03-23T02:31:34Z", "ms": 859084293745.1472 }, "end": { "local": "1997-03-24T08:45:14+04:00", "utc": "1997-03-24T04:45:14Z", "ms": 859178714482.6531 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-23T06:31:34+04:00", "utc": "1997-03-23T02:31:34Z", "ms": 859084293745.1472 }, "end": { "local": "1997-03-24T08:45:14+04:00", "utc": "1997-03-24T04:45:14Z", "ms": 859178714482.6531 } }, "kaala": "sayahna", "days": [ { "local_date": "1997-03-23", "window": { "start": { "local": "1997-03-23T16:08:26+04:00", "utc": "1997-03-23T12:08:26Z", "ms": 859118905802.205 }, "end": { "local": "1997-03-23T18:34:34+04:00", "utc": "1997-03-23T14:34:34Z", "ms": 859127674116.3076 } }, "covered_min": 146, "window_min": 146, "qualifies": true }, { "local_date": "1997-03-24", "window": { "start": { "local": "1997-03-24T16:08:33+04:00", "utc": "1997-03-24T12:08:33Z", "ms": 859205313434.3235 }, "end": { "local": "1997-03-24T18:34:59+04:00", "utc": "1997-03-24T14:34:59Z", "ms": 859214098948.6558 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:32 on Sun 23 Mar to 08:45 on Mon 24 Mar.", "fact": "1997-03-23T02:31:34Z → 1997-03-24T04:45:14Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:08–18:35 on the 23rd, 16:09–18:35 on the 24th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 146 of 146 minutes on the 23rd and 0 of 146 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26599 s" }, { "step": "ruling", "text": "Holikā Dahana, Abu Dhabi, 1997: Sunday 23 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holika-dahana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "not_evaluated": "The hour the row gives for the rite (\"it should be observed on second half of purnima at night\") is not tested: sāyāhna alone settles the day.", "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-23", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Holikā Dahana 1997 falls on Sunday 23 March. Pūrṇimā runs from 06:32 on Sun 23 Mar to 08:45 on Mon 24 Mar and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/holika-dahana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/holi", "festival": "holi", "name": "Holī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 26599, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-03-23T06:31:34+04:00", "utc": "1997-03-23T02:31:34Z", "ms": 859084293745.1472 }, "end": { "local": "1997-03-24T08:45:14+04:00", "utc": "1997-03-24T04:45:14Z", "ms": 859178714482.6531 }, "month": { "amanta": 11, "purnimanta": 11, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Phālguna" } }, "span": { "of": "tithi", "start": { "local": "1997-03-23T06:31:34+04:00", "utc": "1997-03-23T02:31:34Z", "ms": 859084293745.1472 }, "end": { "local": "1997-03-24T08:45:14+04:00", "utc": "1997-03-24T04:45:14Z", "ms": 859178714482.6531 } }, "kaala": "sayahna", "days": [ { "local_date": "1997-03-23", "window": { "start": { "local": "1997-03-23T16:08:26+04:00", "utc": "1997-03-23T12:08:26Z", "ms": 859118905802.205 }, "end": { "local": "1997-03-23T18:34:34+04:00", "utc": "1997-03-23T14:34:34Z", "ms": 859127674116.3076 } }, "covered_min": 146, "window_min": 146, "qualifies": true }, { "local_date": "1997-03-24", "window": { "start": { "local": "1997-03-24T16:08:33+04:00", "utc": "1997-03-24T12:08:33Z", "ms": 859205313434.3235 }, "end": { "local": "1997-03-24T18:34:59+04:00", "utc": "1997-03-24T14:34:59Z", "ms": 859214098948.6558 } }, "covered_min": 0, "window_min": 146, "qualifies": false } ], "follows": { "festival": "holika-dahana", "name": "Holikā Dahana", "local_date": "1997-03-23", "days": 1 }, "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 06:32 on Sun 23 Mar to 08:45 on Mon 24 Mar.", "fact": "1997-03-23T02:31:34Z → 1997-03-24T04:45:14Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:08–18:35 on the 23rd, 16:09–18:35 on the 24th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 146 of 146 minutes on the 23rd and 0 of 146 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 26599 s" }, { "step": "counted", "text": "Holī is kept the day after Holikā Dahana: Sunday 23 March is the day taken above.", "fact": "follows: holika-dahana + 1 d" }, { "step": "ruling", "text": "Holī, Abu Dhabi, 1997: Monday 24 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "holi", "follows": { "festival": "holika-dahana", "days": 1 }, "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Holika-dahana (Sayahnavyapini — it should be observed on second half of purnima at night), Dolayatra (Bengal & Orissa) (covering 4 ghatikas before sunrise of the day of festival), Holi — on the day after Holikadahana." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-24", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Holī 1997 falls on Monday 24 March. It is kept the day after Holikā Dahana, which falls on Sunday 23 March. Pūrṇimā runs from 06:32 on Sun 23 Mar to 08:45 on Mon 24 Mar and covers all of sāyāhna on the 23rd.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/holi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vasantotsava", "festival": "vasantotsava", "name": "Vasantotsava", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8543, "anga": { "type": "tithi", "index": 15, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-03-24T08:45:14+04:00", "utc": "1997-03-24T04:45:14Z", "ms": 859178714482.6531 }, "end": { "local": "1997-03-25T10:38:41+04:00", "utc": "1997-03-25T06:38:41Z", "ms": 859271921104.097 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-03-24T08:45:14+04:00", "utc": "1997-03-24T04:45:14Z", "ms": 859178714482.6531 }, "end": { "local": "1997-03-25T10:38:41+04:00", "utc": "1997-03-25T06:38:41Z", "ms": 859271921104.097 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-03-24", "window": { "start": { "local": "1997-03-24T06:22:51+04:00", "utc": "1997-03-24T02:22:51Z", "ms": 859170171376.9946 }, "end": { "local": "1997-03-24T06:22:51+04:00", "utc": "1997-03-24T02:22:51Z", "ms": 859170171376.9946 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-03-25", "window": { "start": { "local": "1997-03-25T06:21:50+04:00", "utc": "1997-03-25T02:21:50Z", "ms": 859256510191.4335 }, "end": { "local": "1997-03-25T06:21:50+04:00", "utc": "1997-03-25T02:21:50Z", "ms": 859256510191.4335 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 08:45 on Mon 24 Mar to 10:39 on Tue 25 Mar.", "fact": "1997-03-24T04:45:14Z → 1997-03-25T06:38:41Z" }, { "step": "kaala", "text": "Sunrise is at 06:23 on the 24th and 06:22 on the 25th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be current at sunrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 8543 s" }, { "step": "ruling", "text": "Vasantotsava, Abu Dhabi, 1997: Tuesday 25 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vasantotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 1 Vasantotsava (current at sunrise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "sunrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-25", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vasantotsava 1997 falls on Tuesday 25 March. Pratipadā runs from 08:45 on Mon 24 Mar to 10:39 on Tue 25 Mar and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vasantotsava", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-03-27", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30012, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-03-27T13:11:01+04:00", "utc": "1997-03-27T09:11:01Z", "ms": 859453861499.9596 }, "end": { "local": "1997-03-28T13:44:59+04:00", "utc": "1997-03-28T09:44:59Z", "ms": 859542298770.0593 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-03-27T13:11:01+04:00", "utc": "1997-03-27T09:11:01Z", "ms": 859453861499.9596 }, "end": { "local": "1997-03-28T13:44:59+04:00", "utc": "1997-03-28T09:44:59Z", "ms": 859542298770.0593 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-03-27", "window": { "start": { "local": "1997-03-27T21:31:13+04:00", "utc": "1997-03-27T17:31:13Z", "ms": 859483873156.8203 }, "end": { "local": "1997-03-27T21:31:13+04:00", "utc": "1997-03-27T17:31:13Z", "ms": 859483873156.8203 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-03-28", "window": { "start": { "local": "1997-03-28T22:25:55+04:00", "utc": "1997-03-28T18:25:55Z", "ms": 859573555163.1658 }, "end": { "local": "1997-03-28T22:25:55+04:00", "utc": "1997-03-28T18:25:55Z", "ms": 859573555163.1658 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 13:11 on Thu 27 Mar to 13:45 on Fri 28 Mar.", "fact": "1997-03-27T09:11:01Z → 1997-03-28T09:44:59Z" }, { "step": "kaala", "text": "Moonrise is at 21:31 on the 27th and 22:26 on the 28th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 27th and is not on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30012 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Thursday 27 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Thursday 27 March. Caturthī runs from 13:11 on Thu 27 Mar to 13:45 on Fri 28 Mar and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-03-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shitalashtami", "festival": "shitalashtami", "name": "Śītalāṣṭamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-03-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1039, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-03-31T12:20:07+04:00", "utc": "1997-03-31T08:20:07Z", "ms": 859796407415.1218 }, "end": { "local": "1997-04-01T10:48:49+04:00", "utc": "1997-04-01T06:48:49Z", "ms": 859877329417.8389 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-03-31T12:20:07+04:00", "utc": "1997-03-31T08:20:07Z", "ms": 859796407415.1218 }, "end": { "local": "1997-04-01T10:48:49+04:00", "utc": "1997-04-01T06:48:49Z", "ms": 859877329417.8389 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-03-31", "window": { "start": { "local": "1997-03-31T12:02:48+04:00", "utc": "1997-03-31T08:02:48Z", "ms": 859795367948.5217 }, "end": { "local": "1997-03-31T12:50:48+04:00", "utc": "1997-03-31T08:50:48Z", "ms": 859798247948.5217 } }, "covered_min": 31, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-01", "window": { "start": { "local": "1997-04-01T12:02:30+04:00", "utc": "1997-04-01T08:02:30Z", "ms": 859881750039.8386 }, "end": { "local": "1997-04-01T12:50:30+04:00", "utc": "1997-04-01T08:50:30Z", "ms": 859884630039.8386 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 12:20 on Mon 31 Mar to 10:49 on Tue 1 Apr.", "fact": "1997-03-31T08:20:07Z → 1997-04-01T06:48:49Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 31st, 12:03–12:51 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 31 of 48 minutes on the 31st and 0 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1039 s" }, { "step": "ruling", "text": "Śītalāṣṭamī, Abu Dhabi, 1997: Monday 31 March.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitalashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Sitalastami, (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-03-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-03-31", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śītalāṣṭamī 1997 falls on Monday 31 March. Aṣṭamī runs from 12:20 on Mon 31 Mar to 10:49 on Tue 1 Apr and covers 31 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shitalashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-04-03", "festival": "ekadashi", "name": "Pāpamocanī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 543, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-04-03T06:21:46+04:00", "utc": "1997-04-03T02:21:46Z", "ms": 860034106236.9741 }, "end": { "local": "1997-04-04T03:33:57+04:00", "utc": "1997-04-03T23:33:57Z", "ms": 860110436530.9512 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-03T06:21:46+04:00", "utc": "1997-04-03T02:21:46Z", "ms": 860034106236.9741 }, "end": { "local": "1997-04-04T03:33:57+04:00", "utc": "1997-04-03T23:33:57Z", "ms": 860110436530.9512 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-04-03", "window": { "start": { "local": "1997-04-03T06:12:44+04:00", "utc": "1997-04-03T02:12:44Z", "ms": 860033563547.3169 }, "end": { "local": "1997-04-03T06:12:44+04:00", "utc": "1997-04-03T02:12:44Z", "ms": 860033563547.3169 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-04-04", "window": { "start": { "local": "1997-04-04T06:11:44+04:00", "utc": "1997-04-04T02:11:44Z", "ms": 860119903766.995 }, "end": { "local": "1997-04-04T06:11:44+04:00", "utc": "1997-04-04T02:11:44Z", "ms": 860119903766.995 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 06:22 on Thu 3 Apr to 03:34 on Fri 4 Apr.", "fact": "1997-04-03T02:21:46Z → 1997-04-03T23:33:57Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 3rd and 06:12 on the 4th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 3rd and is not on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 543 s" }, { "step": "ruling", "text": "Pāpamocanī Ekādaśī, Abu Dhabi, 1997: Thursday 3 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-03", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Pāpamocanī Ekādaśī 1997 falls on Thursday 3 April. Ekādaśī runs from 06:22 on Thu 3 Apr to 03:34 on Fri 4 Apr, and is current at sunrise on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-04-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-04-05", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4020, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-04-05T00:30:40+04:00", "utc": "1997-04-04T20:30:40Z", "ms": 860185839947.707 }, "end": { "local": "1997-04-05T21:18:54+04:00", "utc": "1997-04-05T17:18:54Z", "ms": 860260733943.0756 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-05T00:30:40+04:00", "utc": "1997-04-04T20:30:40Z", "ms": 860185839947.707 }, "end": { "local": "1997-04-05T21:18:54+04:00", "utc": "1997-04-05T17:18:54Z", "ms": 860260733943.0756 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-04-04", "window": { "start": { "local": "1997-04-04T18:39:31+04:00", "utc": "1997-04-04T14:39:31Z", "ms": 860164770551.2986 }, "end": { "local": "1997-04-04T20:11:40+04:00", "utc": "1997-04-04T16:11:40Z", "ms": 860170300380.7642 } }, "covered_min": 0, "window_min": 92, "qualifies": false }, { "local_date": "1997-04-05", "window": { "start": { "local": "1997-04-05T18:39:55+04:00", "utc": "1997-04-05T14:39:55Z", "ms": 860251195469.3241 }, "end": { "local": "1997-04-05T20:11:54+04:00", "utc": "1997-04-05T16:11:54Z", "ms": 860256714084.8258 } }, "covered_min": 92, "window_min": 92, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:31 on Sat 5 Apr to 21:19 on Sat 5 Apr.", "fact": "1997-04-04T20:30:40Z → 1997-04-05T17:18:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:40–20:12 on the 4th, 18:40–20:12 on the 5th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 92 minutes on the 4th and 92 of 92 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4020 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Saturday 5 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Saturday 5 April. Trayodaśī runs from 00:31 on Sat 5 Apr to 21:19 on Sat 5 Apr and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-04-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9716, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-04-05T21:18:54+04:00", "utc": "1997-04-05T17:18:54Z", "ms": 860260733943.0756 }, "end": { "local": "1997-04-06T18:06:29+04:00", "utc": "1997-04-06T14:06:29Z", "ms": 860335588766.3522 }, "month": { "amanta": 11, "purnimanta": 0, "adhika": false, "amanta_name": "Phālguna", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-05T21:18:54+04:00", "utc": "1997-04-05T17:18:54Z", "ms": 860260733943.0756 }, "end": { "local": "1997-04-06T18:06:29+04:00", "utc": "1997-04-06T14:06:29Z", "ms": 860335588766.3522 } }, "kaala": "nishita", "days": [ { "local_date": "1997-04-05", "window": { "start": { "local": "1997-04-06T00:00:50+04:00", "utc": "1997-04-05T20:00:50Z", "ms": 860270450277.4556 }, "end": { "local": "1997-04-06T00:48:50+04:00", "utc": "1997-04-05T20:48:50Z", "ms": 860273330277.4556 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-06", "window": { "start": { "local": "1997-04-07T00:00:33+04:00", "utc": "1997-04-06T20:00:33Z", "ms": 860356833348.1138 }, "end": { "local": "1997-04-07T00:48:33+04:00", "utc": "1997-04-06T20:48:33Z", "ms": 860359713348.1138 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:19 on Sat 5 Apr to 18:06 on Sun 6 Apr.", "fact": "1997-04-05T17:18:54Z → 1997-04-06T14:06:29Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:01–00:49 on the 5th, 00:01–00:49 on the 6th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9716 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Saturday 5 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Saturday 5 April. Caturdaśī runs from 21:19 on Sat 5 Apr to 18:06 on Sun 6 Apr and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-04-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/navaratra-arambha-caitra", "festival": "navaratra-arambha-caitra", "name": "Navarātrārambha (Caitra)", "everyday": "Chaitra Navratri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 809, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-04-07T15:01:53+04:00", "utc": "1997-04-07T11:01:53Z", "ms": 860410913313.8289 }, "end": { "local": "1997-04-08T12:13:58+04:00", "utc": "1997-04-08T08:13:58Z", "ms": 860487237911.0602 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-07T15:01:53+04:00", "utc": "1997-04-07T11:01:53Z", "ms": 860410913313.8289 }, "end": { "local": "1997-04-08T12:13:58+04:00", "utc": "1997-04-08T08:13:58Z", "ms": 860487237911.0602 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-07", "window": { "start": { "local": "1997-04-07T12:00:46+04:00", "utc": "1997-04-07T08:00:46Z", "ms": 860400045890.3646 }, "end": { "local": "1997-04-07T12:48:46+04:00", "utc": "1997-04-07T08:48:46Z", "ms": 860402925890.3646 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-04-08", "window": { "start": { "local": "1997-04-08T12:00:29+04:00", "utc": "1997-04-08T08:00:29Z", "ms": 860486429224.3345 }, "end": { "local": "1997-04-08T12:48:29+04:00", "utc": "1997-04-08T08:48:29Z", "ms": 860489309224.3345 } }, "covered_min": 13, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 15:02 on Mon 7 Apr to 12:14 on Tue 8 Apr.", "fact": "1997-04-07T11:01:53Z → 1997-04-08T08:13:58Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 7th, 12:00–12:48 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 13 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 809 s" }, { "step": "ruling", "text": "Navarātrārambha (Caitra), Abu Dhabi, 1997: Tuesday 8 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha-caitra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Navarātrārambha (Caitra) (Chaitra Navratri) 1997 falls on Tuesday 8 April. Pratipadā runs from 15:02 on Mon 7 Apr to 12:14 on Tue 8 Apr and covers 13 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/navaratra-arambha-caitra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/gauri-tritiya", "festival": "gauri-tritiya", "name": "Gaurī Tṛtīyā", "everyday": "Gangaur", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7721, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-04-09T09:51:32+04:00", "utc": "1997-04-09T05:51:32Z", "ms": 860565091711.4043 }, "end": { "local": "1997-04-10T08:02:52+04:00", "utc": "1997-04-10T04:02:52Z", "ms": 860644971684.1404 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-09T09:51:32+04:00", "utc": "1997-04-09T05:51:32Z", "ms": 860565091711.4043 }, "end": { "local": "1997-04-10T08:02:52+04:00", "utc": "1997-04-10T04:02:52Z", "ms": 860644971684.1404 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-09", "window": { "start": { "local": "1997-04-09T12:00:13+04:00", "utc": "1997-04-09T08:00:13Z", "ms": 860572812791.2754 }, "end": { "local": "1997-04-09T12:48:13+04:00", "utc": "1997-04-09T08:48:13Z", "ms": 860575692791.2754 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-10", "window": { "start": { "local": "1997-04-10T11:59:57+04:00", "utc": "1997-04-10T07:59:57Z", "ms": 860659196604.071 }, "end": { "local": "1997-04-10T12:47:57+04:00", "utc": "1997-04-10T08:47:57Z", "ms": 860662076604.071 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:52 on Wed 9 Apr to 08:03 on Thu 10 Apr.", "fact": "1997-04-09T05:51:32Z → 1997-04-10T04:02:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 9th, 12:00–12:48 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7721 s" }, { "step": "ruling", "text": "Gaurī Tṛtīyā, Abu Dhabi, 1997: Wednesday 9 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gauri-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Gaurī Tṛtīyā (Gangaur) 1997 falls on Wednesday 9 April. Tṛtīyā runs from 09:52 on Wed 9 Apr to 08:03 on Thu 10 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/gauri-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/saubhagya-shayana-vrata", "festival": "saubhagya-shayana-vrata", "name": "Saubhāgya Śayana Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7721, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-04-09T09:51:32+04:00", "utc": "1997-04-09T05:51:32Z", "ms": 860565091711.4043 }, "end": { "local": "1997-04-10T08:02:52+04:00", "utc": "1997-04-10T04:02:52Z", "ms": 860644971684.1404 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-09T09:51:32+04:00", "utc": "1997-04-09T05:51:32Z", "ms": 860565091711.4043 }, "end": { "local": "1997-04-10T08:02:52+04:00", "utc": "1997-04-10T04:02:52Z", "ms": 860644971684.1404 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-09", "window": { "start": { "local": "1997-04-09T12:00:13+04:00", "utc": "1997-04-09T08:00:13Z", "ms": 860572812791.2754 }, "end": { "local": "1997-04-09T12:48:13+04:00", "utc": "1997-04-09T08:48:13Z", "ms": 860575692791.2754 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-10", "window": { "start": { "local": "1997-04-10T11:59:57+04:00", "utc": "1997-04-10T07:59:57Z", "ms": 860659196604.071 }, "end": { "local": "1997-04-10T12:47:57+04:00", "utc": "1997-04-10T08:47:57Z", "ms": 860662076604.071 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:52 on Wed 9 Apr to 08:03 on Thu 10 Apr.", "fact": "1997-04-09T05:51:32Z → 1997-04-10T04:02:52Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 9th, 12:00–12:48 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7721 s" }, { "step": "ruling", "text": "Saubhāgya Śayana Vrata, Abu Dhabi, 1997: Wednesday 9 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "saubhagya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Dolotsava, Gauri trtiya, Andolana trtiya, Saubhagya sayana vrata (paraviddha), Sarhul (Bihar)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saubhāgya Śayana Vrata 1997 falls on Wednesday 9 April. Tṛtīyā runs from 09:52 on Wed 9 Apr to 08:03 on Thu 10 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/saubhagya-shayana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-04-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 14225, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-04-10T08:02:52+04:00", "utc": "1997-04-10T04:02:52Z", "ms": 860644971684.1404 }, "end": { "local": "1997-04-11T06:55:01+04:00", "utc": "1997-04-11T02:55:01Z", "ms": 860727300626.4518 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-10T08:02:52+04:00", "utc": "1997-04-10T04:02:52Z", "ms": 860644971684.1404 }, "end": { "local": "1997-04-11T06:55:01+04:00", "utc": "1997-04-11T02:55:01Z", "ms": 860727300626.4518 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-10", "window": { "start": { "local": "1997-04-10T11:59:57+04:00", "utc": "1997-04-10T07:59:57Z", "ms": 860659196604.071 }, "end": { "local": "1997-04-10T12:47:57+04:00", "utc": "1997-04-10T08:47:57Z", "ms": 860662076604.071 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-11", "window": { "start": { "local": "1997-04-11T11:59:41+04:00", "utc": "1997-04-11T07:59:41Z", "ms": 860745580676.1617 }, "end": { "local": "1997-04-11T12:47:41+04:00", "utc": "1997-04-11T08:47:41Z", "ms": 860748460676.1617 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 08:03 on Thu 10 Apr to 06:55 on Fri 11 Apr.", "fact": "1997-04-10T04:02:52Z → 1997-04-11T02:55:01Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 10th, 12:00–12:48 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 14225 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Thursday 10 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Thursday 10 April. Caturthī runs from 08:03 on Thu 10 Apr to 06:55 on Fri 11 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-04-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/lakshmi-panchami", "festival": "lakshmi-panchami", "name": "Lakṣmī Pañcamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18280, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-04-11T06:55:01+04:00", "utc": "1997-04-11T02:55:01Z", "ms": 860727300626.4518 }, "end": { "local": "1997-04-12T06:32:54+04:00", "utc": "1997-04-12T02:32:54Z", "ms": 860812374150.3606 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-11T06:55:01+04:00", "utc": "1997-04-11T02:55:01Z", "ms": 860727300626.4518 }, "end": { "local": "1997-04-12T06:32:54+04:00", "utc": "1997-04-12T02:32:54Z", "ms": 860812374150.3606 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-11", "window": { "start": { "local": "1997-04-11T11:59:41+04:00", "utc": "1997-04-11T07:59:41Z", "ms": 860745580676.1617 }, "end": { "local": "1997-04-11T12:47:41+04:00", "utc": "1997-04-11T08:47:41Z", "ms": 860748460676.1617 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-12", "window": { "start": { "local": "1997-04-12T11:59:25+04:00", "utc": "1997-04-12T07:59:25Z", "ms": 860831965021.6409 }, "end": { "local": "1997-04-12T12:47:25+04:00", "utc": "1997-04-12T08:47:25Z", "ms": 860834845021.6409 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 06:55 on Fri 11 Apr to 06:33 on Sat 12 Apr.", "fact": "1997-04-11T02:55:01Z → 1997-04-12T02:32:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:00–12:48 on the 11th, 11:59–12:47 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 0 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 18280 s" }, { "step": "ruling", "text": "Lakṣmī Pañcamī, Abu Dhabi, 1997: Friday 11 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "lakshmi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sri pancami or Laksmi pancami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Lakṣmī Pañcamī 1997 falls on Friday 11 April. Pañcamī runs from 06:55 on Fri 11 Apr to 06:33 on Sat 12 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/lakshmi-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vaishakhi", "festival": "vaishakhi", "name": "Vaiśākhī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31294, "anga": { "type": "sankranti", "index": 0, "key": "mesha", "name": "Meṣa", "start": { "local": "1997-04-13T21:20:31+04:00", "utc": "1997-04-13T17:20:31Z", "ms": 860952031252.6569 }, "end": { "local": "1997-05-14T18:16:24+04:00", "utc": "1997-05-14T14:16:24Z", "ms": 863619384228.9508 } }, "span": { "of": "transit", "start": { "local": "1997-04-13T21:20:31+04:00", "utc": "1997-04-13T17:20:31Z", "ms": 860952031252.6569 }, "end": { "local": "1997-04-13T21:20:31+04:00", "utc": "1997-04-13T17:20:31Z", "ms": 860952031252.6569 } }, "kaala": "day", "days": [ { "local_date": "1997-04-13", "window": { "start": { "local": "1997-04-13T06:03:01+04:00", "utc": "1997-04-13T02:03:01Z", "ms": 860896981185.6676 }, "end": { "local": "1997-04-14T06:02:05+04:00", "utc": "1997-04-14T02:02:05Z", "ms": 860983325236.9629 } }, "covered_min": 1, "window_min": 1439, "qualifies": true }, { "local_date": "1997-04-14", "window": { "start": { "local": "1997-04-14T06:02:05+04:00", "utc": "1997-04-14T02:02:05Z", "ms": 860983325236.9629 }, "end": { "local": "1997-04-15T06:01:10+04:00", "utc": "1997-04-15T02:01:10Z", "ms": 861069669796.8405 } }, "covered_min": 0, "window_min": 1439, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "The Sun enters Meṣa at 21:21 on Sun 13 Apr.", "fact": "1997-04-13T17:20:31Z · nirayana, lahiri-iae1985" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 06:03 on the 13th, and from 06:02 on the 14th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The festival is kept on the day of the transit, the day counted from sunrise. The transit falls on the 13th, not the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 106" }, { "step": "tie_break", "text": "An instant falls in one day and no other. No tie-break is needed.", "fact": "day counted from sunrise → only-day · margin 31294 s" }, { "step": "ruling", "text": "Vaiśākhī, Abu Dhabi, 1997: Sunday 13 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "solar", "id": "vaishakhi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Mesadi — Cadaka puja (Bengal), Bahag Bihu (Assam), Cheiraoba (Manipur), Visu (T. C. State), Vaisakhi (on the samkramana day commencing from sunrise)." }, { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } ], "not_evaluated": "The other names in the row (Cadaka puja, Bahag Bihu, Cheiraoba, Visu) are regional observances and wait with the regional rows.", "rashi": "Meṣa", "day_from": "sunrise" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-13", "confidence": "determinate" }, { "kind": "reckoning", "id": "civil-day", "local_date": "1997-04-13", "statement": "Counted from midnight", "reference": { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 106", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The following festivals are observed according to the day of Sun's transit into rasis (Ravi-samkramana). For this purpose the day has been taken to begin from midnight, i.e., when the samkramana takes place after midnight, the festival relating to the samkramana is to be observed on the following day." } }, { "kind": "reckoning", "id": "sunset-rule", "local_date": "1997-04-14", "statement": "Past sunset, the next day (the Tamil rule)", "reference": { "text": "Calendar Reform Committee 1955, Rules of Samkranti", "locator": "p. 244", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The Tamil rule: In the Tamil districts the rule is that when a samkranti takes place before sunset, the month begins on the same day, while if it takes place after sunset the month begins on the following day." } } ], "quote": "In Abu Dhabi, Vaiśākhī 1997 falls on Sunday 13 April. The Sun enters Meṣa at 21:21 on Sun 13 Apr, and the rule counts the day from sunrise. By the Tamil rule for the first day of a solar month, which gives a transit after sunset to the next day, it is 14 April.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vaishakhi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/bhavani-utpatti", "festival": "bhavani-utpatti", "name": "Bhavānī Utpatti", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7171, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-04-14T08:09:17+04:00", "utc": "1997-04-14T04:09:17Z", "ms": 860990956524.0354 }, "end": { "local": "1997-04-15T09:59:09+04:00", "utc": "1997-04-15T05:59:09Z", "ms": 861083949089.1754 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-14T08:09:17+04:00", "utc": "1997-04-14T04:09:17Z", "ms": 860990956524.0354 }, "end": { "local": "1997-04-15T09:59:09+04:00", "utc": "1997-04-15T05:59:09Z", "ms": 861083949089.1754 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-14", "window": { "start": { "local": "1997-04-14T11:58:55+04:00", "utc": "1997-04-14T07:58:55Z", "ms": 861004734592.0461 }, "end": { "local": "1997-04-14T12:46:55+04:00", "utc": "1997-04-14T08:46:55Z", "ms": 861007614592.0461 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-15", "window": { "start": { "local": "1997-04-15T11:58:40+04:00", "utc": "1997-04-15T07:58:40Z", "ms": 861091119847.6721 }, "end": { "local": "1997-04-15T12:46:40+04:00", "utc": "1997-04-15T08:46:40Z", "ms": 861093999847.6721 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 08:09 on Mon 14 Apr to 09:59 on Tue 15 Apr.", "fact": "1997-04-14T04:09:17Z → 1997-04-15T05:59:09Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 14th, 11:59–12:47 on the 15th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 14th and 0 of 48 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7171 s" }, { "step": "ruling", "text": "Bhavānī Utpatti, Abu Dhabi, 1997: Monday 14 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bhavani-utpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Annapurna puja (Beng.) (paraviddha), Bhavani-utpatti (paraviddha), Asokastami (Special when combined with naks. Punarvasu and Wednesday, after mid-day)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-14", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Bhavānī Utpatti 1997 falls on Monday 14 April. Aṣṭamī runs from 08:09 on Mon 14 Apr to 09:59 on Tue 15 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/bhavani-utpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rama-navami", "festival": "rama-navami", "name": "Rāma Navamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-15", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1147, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1997-04-15T09:59:09+04:00", "utc": "1997-04-15T05:59:09Z", "ms": 861083949089.1754 }, "end": { "local": "1997-04-16T12:17:33+04:00", "utc": "1997-04-16T08:17:33Z", "ms": 861178652733.0317 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-15T09:59:09+04:00", "utc": "1997-04-15T05:59:09Z", "ms": 861083949089.1754 }, "end": { "local": "1997-04-16T12:17:33+04:00", "utc": "1997-04-16T08:17:33Z", "ms": 861178652733.0317 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-15", "window": { "start": { "local": "1997-04-15T11:58:40+04:00", "utc": "1997-04-15T07:58:40Z", "ms": 861091119847.6721 }, "end": { "local": "1997-04-15T12:46:40+04:00", "utc": "1997-04-15T08:46:40Z", "ms": 861093999847.6721 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-04-16", "window": { "start": { "local": "1997-04-16T11:58:25+04:00", "utc": "1997-04-16T07:58:25Z", "ms": 861177505437.8165 }, "end": { "local": "1997-04-16T12:46:25+04:00", "utc": "1997-04-16T08:46:25Z", "ms": 861180385437.8165 } }, "covered_min": 19, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Navamī runs from 09:59 on Tue 15 Apr to 12:18 on Wed 16 Apr.", "fact": "1997-04-15T05:59:09Z → 1997-04-16T08:17:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 15th, 11:58–12:46 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 19 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1147 s" }, { "step": "ruling", "text": "Rāma Navamī, Abu Dhabi, 1997: Tuesday 15 April.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "rama-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Ramanavami (madhyahnavyapini, special with Punarvasu naks.), Rama jayanti." } ], "not_evaluated": "The row calls the day special when it falls with Punarvasu nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-15", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Rāma Navamī 1997 falls on Tuesday 15 April. Navamī runs from 09:59 on Tue 15 Apr to 12:18 on Wed 16 Apr and covers all of madhyāhna that midday. It also reaches the next midday for 19 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rama-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-04-18", "festival": "ekadashi", "name": "Kāmadā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31919, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-04-17T14:51:19+04:00", "utc": "1997-04-17T10:51:19Z", "ms": 861274279231.0594 }, "end": { "local": "1997-04-18T17:26:34+04:00", "utc": "1997-04-18T13:26:34Z", "ms": 861369994408.0756 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-17T14:51:19+04:00", "utc": "1997-04-17T10:51:19Z", "ms": 861274279231.0594 }, "end": { "local": "1997-04-18T17:26:34+04:00", "utc": "1997-04-18T13:26:34Z", "ms": 861369994408.0756 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-04-17", "window": { "start": { "local": "1997-04-17T05:59:21+04:00", "utc": "1997-04-17T01:59:21Z", "ms": 861242360541.6548 }, "end": { "local": "1997-04-17T05:59:21+04:00", "utc": "1997-04-17T01:59:21Z", "ms": 861242360541.6548 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-04-18", "window": { "start": { "local": "1997-04-18T05:58:27+04:00", "utc": "1997-04-18T01:58:27Z", "ms": 861328706776.7932 }, "end": { "local": "1997-04-18T05:58:27+04:00", "utc": "1997-04-18T01:58:27Z", "ms": 861328706776.7932 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:51 on Thu 17 Apr to 17:27 on Fri 18 Apr.", "fact": "1997-04-17T10:51:19Z → 1997-04-18T13:26:34Z" }, { "step": "kaala", "text": "Sunrise is at 05:59 on the 17th and 05:58 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 31919 s" }, { "step": "ruling", "text": "Kāmadā Ekādaśī, Abu Dhabi, 1997: Friday 18 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kāmadā Ekādaśī 1997 falls on Friday 18 April. Ekādaśī runs from 14:51 on Thu 17 Apr to 17:27 on Fri 18 Apr and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-04-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ananga-trayodashi", "festival": "ananga-trayodashi", "name": "Anaṅga Trayodaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25494, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-04-19T19:50:38+04:00", "utc": "1997-04-19T15:50:38Z", "ms": 861465038304.4148 }, "end": { "local": "1997-04-20T21:53:35+04:00", "utc": "1997-04-20T17:53:35Z", "ms": 861558815319.6194 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-19T19:50:38+04:00", "utc": "1997-04-19T15:50:38Z", "ms": 861465038304.4148 }, "end": { "local": "1997-04-20T21:53:35+04:00", "utc": "1997-04-20T17:53:35Z", "ms": 861558815319.6194 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-19", "window": { "start": { "local": "1997-04-19T11:57:44+04:00", "utc": "1997-04-19T07:57:44Z", "ms": 861436664374.1357 }, "end": { "local": "1997-04-19T12:45:44+04:00", "utc": "1997-04-19T08:45:44Z", "ms": 861439544374.1357 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-04-20", "window": { "start": { "local": "1997-04-20T11:57:31+04:00", "utc": "1997-04-20T07:57:31Z", "ms": 861523051461.3062 }, "end": { "local": "1997-04-20T12:45:31+04:00", "utc": "1997-04-20T08:45:31Z", "ms": 861525931461.3062 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:51 on Sat 19 Apr to 21:54 on Sun 20 Apr.", "fact": "1997-04-19T15:50:38Z → 1997-04-20T17:53:35Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 19th, 11:58–12:46 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 19th and 48 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 25494 s" }, { "step": "ruling", "text": "Anaṅga Trayodaśī, Abu Dhabi, 1997: Sunday 20 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ananga-trayodashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 13 Ananga trayodasi (purvaviddha), Mahavira jayanti (Jain)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-20", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Anaṅga Trayodaśī 1997 falls on Sunday 20 April. Trayodaśī runs from 19:51 on Sat 19 Apr to 21:54 on Sun 20 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ananga-trayodashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-04-20", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-20", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 1483, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-04-19T19:50:38+04:00", "utc": "1997-04-19T15:50:38Z", "ms": 861465038304.4148 }, "end": { "local": "1997-04-20T21:53:35+04:00", "utc": "1997-04-20T17:53:35Z", "ms": 861558815319.6194 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-19T19:50:38+04:00", "utc": "1997-04-19T15:50:38Z", "ms": 861465038304.4148 }, "end": { "local": "1997-04-20T21:53:35+04:00", "utc": "1997-04-20T17:53:35Z", "ms": 861558815319.6194 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-04-19", "window": { "start": { "local": "1997-04-19T18:45:55+04:00", "utc": "1997-04-19T14:45:55Z", "ms": 861461155127.4485 }, "end": { "local": "1997-04-19T20:15:21+04:00", "utc": "1997-04-19T16:15:21Z", "ms": 861466521257.017 } }, "covered_min": 25, "window_min": 89, "qualifies": true }, { "local_date": "1997-04-20", "window": { "start": { "local": "1997-04-20T18:46:22+04:00", "utc": "1997-04-20T14:46:22Z", "ms": 861547581823.4 }, "end": { "local": "1997-04-20T20:15:37+04:00", "utc": "1997-04-20T16:15:37Z", "ms": 861552937478.6187 } }, "covered_min": 89, "window_min": 89, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 19:51 on Sat 19 Apr to 21:54 on Sun 20 Apr.", "fact": "1997-04-19T15:50:38Z → 1997-04-20T17:53:35Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:46–20:15 on the 19th, 18:46–20:16 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 25 of 89 minutes on the 19th and 89 of 89 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both evenings qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 1483 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Sunday 20 April.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-20", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-20", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Sunday 20 April. Trayodaśī runs from 19:51 on Sat 19 Apr to 21:54 on Sun 20 Apr and covers all of pradoṣa that evening. It also reaches the previous evening for 25 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-04-20", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vishnu-damanaka-chaturdashi", "festival": "vishnu-damanaka-chaturdashi", "name": "Viṣṇudamanaka Caturdaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32884, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-04-20T21:53:35+04:00", "utc": "1997-04-20T17:53:35Z", "ms": 861558815319.6194 }, "end": { "local": "1997-04-21T23:28:56+04:00", "utc": "1997-04-21T19:28:56Z", "ms": 861650935567.4332 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-20T21:53:35+04:00", "utc": "1997-04-20T17:53:35Z", "ms": 861558815319.6194 }, "end": { "local": "1997-04-21T23:28:56+04:00", "utc": "1997-04-21T19:28:56Z", "ms": 861650935567.4332 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-20", "window": { "start": { "local": "1997-04-20T11:57:31+04:00", "utc": "1997-04-20T07:57:31Z", "ms": 861523051461.3062 }, "end": { "local": "1997-04-20T12:45:31+04:00", "utc": "1997-04-20T08:45:31Z", "ms": 861525931461.3062 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-04-21", "window": { "start": { "local": "1997-04-21T11:57:19+04:00", "utc": "1997-04-21T07:57:19Z", "ms": 861609438962.5549 }, "end": { "local": "1997-04-21T12:45:19+04:00", "utc": "1997-04-21T08:45:19Z", "ms": 861612318962.5549 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 21:54 on Sun 20 Apr to 23:29 on Mon 21 Apr.", "fact": "1997-04-20T17:53:35Z → 1997-04-21T19:28:56Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 20th, 11:57–12:45 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 20th and 48 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32884 s" }, { "step": "ruling", "text": "Viṣṇudamanaka Caturdaśī, Abu Dhabi, 1997: Monday 21 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vishnu-damanaka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Madanabhanji, (Bengal & Orissa) (paraviddha), Sivadamanaka caturdasi, Visnudamanaka caturdasi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-21", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Viṣṇudamanaka Caturdaśī 1997 falls on Monday 21 April. Caturdaśī runs from 21:54 on Sun 20 Apr to 23:29 on Mon 21 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vishnu-damanaka-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/chaitri-purnima", "festival": "chaitri-purnima", "name": "Caitrī Pūrṇimā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38617, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-04-21T23:28:56+04:00", "utc": "1997-04-21T19:28:56Z", "ms": 861650935567.4332 }, "end": { "local": "1997-04-23T00:33:30+04:00", "utc": "1997-04-22T20:33:30Z", "ms": 861741209516.6758 }, "month": { "amanta": 0, "purnimanta": 0, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Caitra" } }, "span": { "of": "tithi", "start": { "local": "1997-04-21T23:28:56+04:00", "utc": "1997-04-21T19:28:56Z", "ms": 861650935567.4332 }, "end": { "local": "1997-04-23T00:33:30+04:00", "utc": "1997-04-22T20:33:30Z", "ms": 861741209516.6758 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-04-21", "window": { "start": { "local": "1997-04-21T11:57:19+04:00", "utc": "1997-04-21T07:57:19Z", "ms": 861609438962.5549 }, "end": { "local": "1997-04-21T12:45:19+04:00", "utc": "1997-04-21T08:45:19Z", "ms": 861612318962.5549 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-04-22", "window": { "start": { "local": "1997-04-22T11:57:07+04:00", "utc": "1997-04-22T07:57:07Z", "ms": 861695826893.7361 }, "end": { "local": "1997-04-22T12:45:07+04:00", "utc": "1997-04-22T08:45:07Z", "ms": 861698706893.7361 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 23:29 on Mon 21 Apr to 00:33 on Wed 23 Apr.", "fact": "1997-04-21T19:28:56Z → 1997-04-22T20:33:30Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 21st, 11:57–12:45 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38617 s" }, { "step": "ruling", "text": "Caitrī Pūrṇimā, Abu Dhabi, 1997: Tuesday 22 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chaitri-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Caitri purnima (paraviddha), Hanumat jayanti, Oli ending (Jain)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-22", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Caitrī Pūrṇimā 1997 falls on Tuesday 22 April. Pūrṇimā runs from 23:29 on Mon 21 Apr to 00:33 on Wed 23 Apr and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/chaitri-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-04-26", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-04-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6365, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-04-26T00:46:52+04:00", "utc": "1997-04-25T20:46:52Z", "ms": 862001212305.855 }, "end": { "local": "1997-04-26T23:58:57+04:00", "utc": "1997-04-26T19:58:57Z", "ms": 862084736862.5703 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-04-26T00:46:52+04:00", "utc": "1997-04-25T20:46:52Z", "ms": 862001212305.855 }, "end": { "local": "1997-04-26T23:58:57+04:00", "utc": "1997-04-26T19:58:57Z", "ms": 862084736862.5703 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-04-25", "window": { "start": { "local": "1997-04-25T21:16:51+04:00", "utc": "1997-04-25T17:16:51Z", "ms": 861988610758.1051 }, "end": { "local": "1997-04-25T21:16:51+04:00", "utc": "1997-04-25T17:16:51Z", "ms": 861988610758.1051 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-04-26", "window": { "start": { "local": "1997-04-26T22:12:52+04:00", "utc": "1997-04-26T18:12:52Z", "ms": 862078371815.738 }, "end": { "local": "1997-04-26T22:12:52+04:00", "utc": "1997-04-26T18:12:52Z", "ms": 862078371815.738 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 00:47 on Sat 26 Apr to 23:59 on Sat 26 Apr.", "fact": "1997-04-25T20:46:52Z → 1997-04-26T19:58:57Z" }, { "step": "kaala", "text": "Moonrise is at 21:17 on the 25th and 22:13 on the 26th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 25th and is on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6365 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Saturday 26 April.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-04-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-04-26", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Saturday 26 April. Caturthī runs from 00:47 on Sat 26 Apr to 23:59 on Sat 26 Apr and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-04-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-05-03", "festival": "ekadashi", "name": "Varūthinī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16759, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-05-02T12:57:19+04:00", "utc": "1997-05-02T08:57:19Z", "ms": 862563438677.1553 }, "end": { "local": "1997-05-03T10:25:47+04:00", "utc": "1997-05-03T06:25:47Z", "ms": 862640747010.9034 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-02T12:57:19+04:00", "utc": "1997-05-02T08:57:19Z", "ms": 862563438677.1553 }, "end": { "local": "1997-05-03T10:25:47+04:00", "utc": "1997-05-03T06:25:47Z", "ms": 862640747010.9034 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-05-02", "window": { "start": { "local": "1997-05-02T05:47:10+04:00", "utc": "1997-05-02T01:47:10Z", "ms": 862537629546.8054 }, "end": { "local": "1997-05-02T05:47:10+04:00", "utc": "1997-05-02T01:47:10Z", "ms": 862537629546.8054 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-05-03", "window": { "start": { "local": "1997-05-03T05:46:28+04:00", "utc": "1997-05-03T01:46:28Z", "ms": 862623987534.6934 }, "end": { "local": "1997-05-03T05:46:28+04:00", "utc": "1997-05-03T01:46:28Z", "ms": 862623987534.6934 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 12:57 on Fri 2 May to 10:26 on Sat 3 May.", "fact": "1997-05-02T08:57:19Z → 1997-05-03T06:25:47Z" }, { "step": "kaala", "text": "Sunrise is at 05:47 on the 2nd and 05:46 on the 3rd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 2nd and is on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 16759 s" }, { "step": "ruling", "text": "Varūthinī Ekādaśī, Abu Dhabi, 1997: Saturday 3 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-03", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Varūthinī Ekādaśī 1997 falls on Saturday 3 May. Ekādaśī runs from 12:57 on Fri 2 May to 10:26 on Sat 3 May and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-05-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-05-04", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32324, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-05-04T07:51:07+04:00", "utc": "1997-05-04T03:51:07Z", "ms": 862717866576.2786 }, "end": { "local": "1997-05-05T05:18:37+04:00", "utc": "1997-05-05T01:18:37Z", "ms": 862795116957.0809 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-04T07:51:07+04:00", "utc": "1997-05-04T03:51:07Z", "ms": 862717866576.2786 }, "end": { "local": "1997-05-05T05:18:37+04:00", "utc": "1997-05-05T01:18:37Z", "ms": 862795116957.0809 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-05-03", "window": { "start": { "local": "1997-05-03T18:52:26+04:00", "utc": "1997-05-03T14:52:26Z", "ms": 862671145648.469 }, "end": { "local": "1997-05-03T20:19:32+04:00", "utc": "1997-05-03T16:19:32Z", "ms": 862676372426.3383 } }, "covered_min": 0, "window_min": 87, "qualifies": false }, { "local_date": "1997-05-04", "window": { "start": { "local": "1997-05-04T18:52:55+04:00", "utc": "1997-05-04T14:52:55Z", "ms": 862757574927.7887 }, "end": { "local": "1997-05-04T20:19:52+04:00", "utc": "1997-05-04T16:19:52Z", "ms": 862762792458.1418 } }, "covered_min": 87, "window_min": 87, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:51 on Sun 4 May to 05:19 on Mon 5 May.", "fact": "1997-05-04T03:51:07Z → 1997-05-05T01:18:37Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:52–20:20 on the 3rd, 18:53–20:20 on the 4th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 87 minutes on the 3rd and 87 of 87 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32324 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Sunday 4 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-04", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Sunday 4 May. Trayodaśī runs from 07:51 on Sun 4 May to 05:19 on Mon 5 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-05-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-05-05", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7905, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-05-05T05:18:37+04:00", "utc": "1997-05-05T01:18:37Z", "ms": 862795116957.0809 }, "end": { "local": "1997-05-06T02:54:41+04:00", "utc": "1997-05-05T22:54:41Z", "ms": 862872880794.1284 }, "month": { "amanta": 0, "purnimanta": 1, "adhika": false, "amanta_name": "Caitra", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-05T05:18:37+04:00", "utc": "1997-05-05T01:18:37Z", "ms": 862795116957.0809 }, "end": { "local": "1997-05-06T02:54:41+04:00", "utc": "1997-05-05T22:54:41Z", "ms": 862872880794.1284 } }, "kaala": "nishita", "days": [ { "local_date": "1997-05-04", "window": { "start": { "local": "1997-05-04T23:55:01+04:00", "utc": "1997-05-04T19:55:01Z", "ms": 862775700666.6128 }, "end": { "local": "1997-05-05T00:43:01+04:00", "utc": "1997-05-04T20:43:01Z", "ms": 862778580666.6128 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-05-05", "window": { "start": { "local": "1997-05-05T23:54:56+04:00", "utc": "1997-05-05T19:54:56Z", "ms": 862862095838.1157 }, "end": { "local": "1997-05-06T00:42:56+04:00", "utc": "1997-05-05T20:42:56Z", "ms": 862864975838.1157 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 05:19 on Mon 5 May to 02:55 on Tue 6 May.", "fact": "1997-05-05T01:18:37Z → 1997-05-05T22:54:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:55–00:43 on the 4th, 23:55–00:43 on the 5th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 4th and 48 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7905 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Monday 5 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Monday 5 May. Caturdaśī runs from 05:19 on Mon 5 May to 02:55 on Tue 6 May and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-05-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/akshaya-tritiya", "festival": "akshaya-tritiya", "name": "Akṣaya Tṛtīyā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28470, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-05-08T21:48:06+04:00", "utc": "1997-05-08T17:48:06Z", "ms": 863113686243.846 }, "end": { "local": "1997-05-09T21:12:01+04:00", "utc": "1997-05-09T17:12:01Z", "ms": 863197920895.7177 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-08T21:48:06+04:00", "utc": "1997-05-08T17:48:06Z", "ms": 863113686243.846 }, "end": { "local": "1997-05-09T21:12:01+04:00", "utc": "1997-05-09T17:12:01Z", "ms": 863197920895.7177 } }, "kaala": "purvahna", "days": [ { "local_date": "1997-05-09", "window": { "start": { "local": "1997-05-09T05:42:36+04:00", "utc": "1997-05-09T01:42:36Z", "ms": 863142156115.3138 }, "end": { "local": "1997-05-09T10:06:52+04:00", "utc": "1997-05-09T06:06:52Z", "ms": 863158011845.1611 } }, "covered_min": 264, "window_min": 264, "qualifies": true }, { "local_date": "1997-05-10", "window": { "start": { "local": "1997-05-10T05:42:01+04:00", "utc": "1997-05-10T01:42:01Z", "ms": 863228521109.8157 }, "end": { "local": "1997-05-10T10:06:38+04:00", "utc": "1997-05-10T06:06:38Z", "ms": 863244398495.3362 } }, "covered_min": 0, "window_min": 265, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:48 on Thu 8 May to 21:12 on Fri 9 May.", "fact": "1997-05-08T17:48:06Z → 1997-05-09T17:12:01Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 05:43–10:07 on the 9th, 05:42–10:07 on the 10th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pūrvāhṇa. It covers 264 of 264 minutes on the 9th and 0 of 265 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 28470 s" }, { "step": "ruling", "text": "Akṣaya Tṛtīyā, Abu Dhabi, 1997: Friday 9 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "not_evaluated": "The row calls the day special with Rohiṇī nakṣatra and a Wednesday; neither is tested.", "kaala": "purvahna", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Akṣaya Tṛtīyā 1997 falls on Friday 9 May. Tṛtīyā runs from 21:48 on Thu 8 May to 21:12 on Fri 9 May and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/akshaya-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/parashurama-jayanti", "festival": "parashurama-jayanti", "name": "Paraśurāma Jayantī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3025, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-05-08T21:48:06+04:00", "utc": "1997-05-08T17:48:06Z", "ms": 863113686243.846 }, "end": { "local": "1997-05-09T21:12:01+04:00", "utc": "1997-05-09T17:12:01Z", "ms": 863197920895.7177 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-08T21:48:06+04:00", "utc": "1997-05-08T17:48:06Z", "ms": 863113686243.846 }, "end": { "local": "1997-05-09T21:12:01+04:00", "utc": "1997-05-09T17:12:01Z", "ms": 863197920895.7177 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-05-08", "window": { "start": { "local": "1997-05-08T18:54:53+04:00", "utc": "1997-05-08T14:54:53Z", "ms": 863103293416.8055 }, "end": { "local": "1997-05-08T20:21:15+04:00", "utc": "1997-05-08T16:21:15Z", "ms": 863108475109.94 } }, "covered_min": 0, "window_min": 86, "qualifies": false }, { "local_date": "1997-05-09", "window": { "start": { "local": "1997-05-09T18:55:23+04:00", "utc": "1997-05-09T14:55:23Z", "ms": 863189723304.8558 }, "end": { "local": "1997-05-09T20:21:36+04:00", "utc": "1997-05-09T16:21:36Z", "ms": 863194896345.5171 } }, "covered_min": 86, "window_min": 86, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 21:48 on Thu 8 May to 21:12 on Fri 9 May.", "fact": "1997-05-08T17:48:06Z → 1997-05-09T17:12:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:55–20:21 on the 8th, 18:55–20:22 on the 9th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during pradoṣa. It covers 0 of 86 minutes on the 8th and 86 of 86 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3025 s" }, { "step": "ruling", "text": "Paraśurāma Jayantī, Abu Dhabi, 1997: Friday 9 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Aksaya trtiya (purvahna vyapini, paraviddha) (Special when combined with Rohini naksatra and Wednesday), Candanayatra, Parasurama jayanti (pradosavyapini — if occurs on two successive days, the second day is to be observed)." } ], "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Paraśurāma Jayantī 1997 falls on Friday 9 May. Tṛtīyā runs from 21:48 on Thu 8 May to 21:12 on Fri 9 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/parashurama-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-05-10", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30541, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-05-09T21:12:01+04:00", "utc": "1997-05-09T17:12:01Z", "ms": 863197920895.7177 }, "end": { "local": "1997-05-10T21:18:11+04:00", "utc": "1997-05-10T17:18:11Z", "ms": 863284691468.7373 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-09T21:12:01+04:00", "utc": "1997-05-09T17:12:01Z", "ms": 863197920895.7177 }, "end": { "local": "1997-05-10T21:18:11+04:00", "utc": "1997-05-10T17:18:11Z", "ms": 863284691468.7373 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-09", "window": { "start": { "local": "1997-05-09T11:55:00+04:00", "utc": "1997-05-09T07:55:00Z", "ms": 863164499710.0848 }, "end": { "local": "1997-05-09T12:43:00+04:00", "utc": "1997-05-09T08:43:00Z", "ms": 863167379710.0848 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-05-10", "window": { "start": { "local": "1997-05-10T11:54:57+04:00", "utc": "1997-05-10T07:54:57Z", "ms": 863250897188.0964 }, "end": { "local": "1997-05-10T12:42:57+04:00", "utc": "1997-05-10T08:42:57Z", "ms": 863253777188.0964 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:12 on Fri 9 May to 21:18 on Sat 10 May.", "fact": "1997-05-09T17:12:01Z → 1997-05-10T17:18:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 9th, 11:55–12:43 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30541 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Saturday 10 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Saturday 10 May. Caturthī runs from 21:12 on Fri 9 May to 21:18 on Sat 10 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-05-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shankara-jayanti", "festival": "shankara-jayanti", "name": "Śaṅkara Jayantī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30914, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-05-10T21:18:11+04:00", "utc": "1997-05-10T17:18:11Z", "ms": 863284691468.7373 }, "end": { "local": "1997-05-11T22:08:08+04:00", "utc": "1997-05-11T18:08:08Z", "ms": 863374088405.5295 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-10T21:18:11+04:00", "utc": "1997-05-10T17:18:11Z", "ms": 863284691468.7373 }, "end": { "local": "1997-05-11T22:08:08+04:00", "utc": "1997-05-11T18:08:08Z", "ms": 863374088405.5295 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-10", "window": { "start": { "local": "1997-05-10T11:54:57+04:00", "utc": "1997-05-10T07:54:57Z", "ms": 863250897188.0964 }, "end": { "local": "1997-05-10T12:42:57+04:00", "utc": "1997-05-10T08:42:57Z", "ms": 863253777188.0964 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-05-11", "window": { "start": { "local": "1997-05-11T11:54:55+04:00", "utc": "1997-05-11T07:54:55Z", "ms": 863337295220.396 }, "end": { "local": "1997-05-11T12:42:55+04:00", "utc": "1997-05-11T08:42:55Z", "ms": 863340175220.396 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:18 on Sat 10 May to 22:08 on Sun 11 May.", "fact": "1997-05-10T17:18:11Z → 1997-05-11T18:08:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 10th, 11:55–12:43 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30914 s" }, { "step": "ruling", "text": "Śaṅkara Jayantī, Abu Dhabi, 1997: Sunday 11 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shankara-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Sankara jayanti." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śaṅkara Jayantī 1997 falls on Sunday 11 May. Pañcamī runs from 21:18 on Sat 10 May to 22:08 on Sun 11 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shankara-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/gangotpatti", "festival": "gangotpatti", "name": "Gaṅgotpatti", "everyday": "Ganga Saptami", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36669, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-05-12T23:39:09+04:00", "utc": "1997-05-12T19:39:09Z", "ms": 863465949273.3722 }, "end": { "local": "1997-05-14T01:43:44+04:00", "utc": "1997-05-13T21:43:44Z", "ms": 863559823739.6836 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-12T23:39:09+04:00", "utc": "1997-05-12T19:39:09Z", "ms": 863465949273.3722 }, "end": { "local": "1997-05-14T01:43:44+04:00", "utc": "1997-05-13T21:43:44Z", "ms": 863559823739.6836 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-13", "window": { "start": { "local": "1997-05-13T11:54:53+04:00", "utc": "1997-05-13T07:54:53Z", "ms": 863510092939.9534 }, "end": { "local": "1997-05-13T12:42:53+04:00", "utc": "1997-05-13T08:42:53Z", "ms": 863512972939.9534 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-05-14", "window": { "start": { "local": "1997-05-14T11:54:53+04:00", "utc": "1997-05-14T07:54:53Z", "ms": 863596492623.1469 }, "end": { "local": "1997-05-14T12:42:53+04:00", "utc": "1997-05-14T08:42:53Z", "ms": 863599372623.1469 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 23:39 on Mon 12 May to 01:44 on Wed 14 May.", "fact": "1997-05-12T19:39:09Z → 1997-05-13T21:43:44Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 13th, 11:55–12:43 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 36669 s" }, { "step": "ruling", "text": "Gaṅgotpatti, Abu Dhabi, 1997: Tuesday 13 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gangotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Gangotpatti, (madhyahna vyapini, if occurs on two successive days, the first day is to be observed), Jahnu saptami, Sarkara saptami." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Gaṅgotpatti (Ganga Saptami) 1997 falls on Tuesday 13 May. Saptamī runs from 23:39 on Mon 12 May to 01:44 on Wed 14 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/gangotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-05-18", "festival": "ekadashi", "name": "Mohinī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12490, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-05-17T09:06:36+04:00", "utc": "1997-05-17T05:06:36Z", "ms": 863845595977.0719 }, "end": { "local": "1997-05-18T11:07:50+04:00", "utc": "1997-05-18T07:07:50Z", "ms": 863939269607.5804 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-17T09:06:36+04:00", "utc": "1997-05-17T05:06:36Z", "ms": 863845595977.0719 }, "end": { "local": "1997-05-18T11:07:50+04:00", "utc": "1997-05-18T07:07:50Z", "ms": 863939269607.5804 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-05-17", "window": { "start": { "local": "1997-05-17T05:38:26+04:00", "utc": "1997-05-17T01:38:26Z", "ms": 863833106230.0189 }, "end": { "local": "1997-05-17T05:38:26+04:00", "utc": "1997-05-17T01:38:26Z", "ms": 863833106230.0189 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-05-18", "window": { "start": { "local": "1997-05-18T05:38:00+04:00", "utc": "1997-05-18T01:38:00Z", "ms": 863919479989.5712 }, "end": { "local": "1997-05-18T05:38:00+04:00", "utc": "1997-05-18T01:38:00Z", "ms": 863919479989.5712 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 09:07 on Sat 17 May to 11:08 on Sun 18 May.", "fact": "1997-05-17T05:06:36Z → 1997-05-18T07:07:50Z" }, { "step": "kaala", "text": "Sunrise is at 05:38 on the 17th and 05:38 on the 18th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 17th and is on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 12490 s" }, { "step": "ruling", "text": "Mohinī Ekādaśī, Abu Dhabi, 1997: Sunday 18 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mohinī Ekādaśī 1997 falls on Sunday 18 May. Ekādaśī runs from 09:07 on Sat 17 May to 11:08 on Sun 18 May and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-05-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/parashurama-dvadashi", "festival": "parashurama-dvadashi", "name": "Paraśurāma Dvādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 393, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-05-18T11:07:50+04:00", "utc": "1997-05-18T07:07:50Z", "ms": 863939269607.5804 }, "end": { "local": "1997-05-19T12:36:26+04:00", "utc": "1997-05-19T08:36:26Z", "ms": 864030986037.1625 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-18T11:07:50+04:00", "utc": "1997-05-18T07:07:50Z", "ms": 863939269607.5804 }, "end": { "local": "1997-05-19T12:36:26+04:00", "utc": "1997-05-19T08:36:26Z", "ms": 864030986037.1625 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-18", "window": { "start": { "local": "1997-05-18T11:54:57+04:00", "utc": "1997-05-18T07:54:57Z", "ms": 863942096789.1714 }, "end": { "local": "1997-05-18T12:42:57+04:00", "utc": "1997-05-18T08:42:57Z", "ms": 863944976789.1714 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-05-19", "window": { "start": { "local": "1997-05-19T11:54:59+04:00", "utc": "1997-05-19T07:54:59Z", "ms": 864028499174.448 }, "end": { "local": "1997-05-19T12:42:59+04:00", "utc": "1997-05-19T08:42:59Z", "ms": 864031379174.448 } }, "covered_min": 41, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:08 on Sun 18 May to 12:36 on Mon 19 May.", "fact": "1997-05-18T07:07:50Z → 1997-05-19T08:36:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 18th, 11:55–12:43 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 41 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 393 s" }, { "step": "ruling", "text": "Paraśurāma Dvādaśī, Abu Dhabi, 1997: Sunday 18 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "parashurama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Paraśurāma Dvādaśī 1997 falls on Sunday 18 May. Dvādaśī runs from 11:08 on Sun 18 May to 12:36 on Mon 19 May and covers all of madhyāhna that midday. It also reaches the next midday for 41 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/parashurama-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rukmini-dvadashi", "festival": "rukmini-dvadashi", "name": "Rukmiṇī Dvādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 393, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-05-18T11:07:50+04:00", "utc": "1997-05-18T07:07:50Z", "ms": 863939269607.5804 }, "end": { "local": "1997-05-19T12:36:26+04:00", "utc": "1997-05-19T08:36:26Z", "ms": 864030986037.1625 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-18T11:07:50+04:00", "utc": "1997-05-18T07:07:50Z", "ms": 863939269607.5804 }, "end": { "local": "1997-05-19T12:36:26+04:00", "utc": "1997-05-19T08:36:26Z", "ms": 864030986037.1625 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-18", "window": { "start": { "local": "1997-05-18T11:54:57+04:00", "utc": "1997-05-18T07:54:57Z", "ms": 863942096789.1714 }, "end": { "local": "1997-05-18T12:42:57+04:00", "utc": "1997-05-18T08:42:57Z", "ms": 863944976789.1714 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-05-19", "window": { "start": { "local": "1997-05-19T11:54:59+04:00", "utc": "1997-05-19T07:54:59Z", "ms": 864028499174.448 }, "end": { "local": "1997-05-19T12:42:59+04:00", "utc": "1997-05-19T08:42:59Z", "ms": 864031379174.448 } }, "covered_min": 41, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 11:08 on Sun 18 May to 12:36 on Mon 19 May.", "fact": "1997-05-18T07:07:50Z → 1997-05-19T08:36:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 18th, 11:55–12:43 on the 19th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 18th and 41 of 48 on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 393 s" }, { "step": "ruling", "text": "Rukmiṇī Dvādaśī, Abu Dhabi, 1997: Sunday 18 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rukmini-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Parasurama dvadasi (purvaviddha), Rukmini dvadasi (purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Rukmiṇī Dvādaśī 1997 falls on Sunday 18 May. Dvādaśī runs from 11:08 on Sun 18 May to 12:36 on Mon 19 May and covers all of madhyāhna that midday. It also reaches the next midday for 41 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rukmini-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-05-19", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20032, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-05-19T12:36:26+04:00", "utc": "1997-05-19T08:36:26Z", "ms": 864030986037.1625 }, "end": { "local": "1997-05-20T13:27:01+04:00", "utc": "1997-05-20T09:27:01Z", "ms": 864120421012.298 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-19T12:36:26+04:00", "utc": "1997-05-19T08:36:26Z", "ms": 864030986037.1625 }, "end": { "local": "1997-05-20T13:27:01+04:00", "utc": "1997-05-20T09:27:01Z", "ms": 864120421012.298 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-05-19", "window": { "start": { "local": "1997-05-19T19:00:23+04:00", "utc": "1997-05-19T15:00:23Z", "ms": 864054023450.5894 }, "end": { "local": "1997-05-19T20:25:18+04:00", "utc": "1997-05-19T16:25:18Z", "ms": 864059117786.1161 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "1997-05-20", "window": { "start": { "local": "1997-05-20T19:00:53+04:00", "utc": "1997-05-20T15:00:53Z", "ms": 864140453214.1052 }, "end": { "local": "1997-05-20T20:25:41+04:00", "utc": "1997-05-20T16:25:41Z", "ms": 864145540546.3862 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:36 on Mon 19 May to 13:27 on Tue 20 May.", "fact": "1997-05-19T08:36:26Z → 1997-05-20T09:27:01Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:00–20:25 on the 19th, 19:01–20:26 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 85 of 85 minutes on the 19th and 0 of 85 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20032 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Monday 19 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Monday 19 May. Trayodaśī runs from 12:36 on Mon 19 May to 13:27 on Tue 20 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-05-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/nrisimha-chaturdashi", "festival": "nrisimha-chaturdashi", "name": "Nṛsiṃha Caturdaśī", "everyday": "Narasimha Jayanti", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19371, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-05-20T13:27:01+04:00", "utc": "1997-05-20T09:27:01Z", "ms": 864120421012.298 }, "end": { "local": "1997-05-21T13:38:31+04:00", "utc": "1997-05-21T09:38:31Z", "ms": 864207511496.358 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-20T13:27:01+04:00", "utc": "1997-05-20T09:27:01Z", "ms": 864120421012.298 }, "end": { "local": "1997-05-21T13:38:31+04:00", "utc": "1997-05-21T09:38:31Z", "ms": 864207511496.358 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-05-20", "window": { "start": { "local": "1997-05-20T19:00:53+04:00", "utc": "1997-05-20T15:00:53Z", "ms": 864140453214.1052 }, "end": { "local": "1997-05-20T20:25:41+04:00", "utc": "1997-05-20T16:25:41Z", "ms": 864145540546.3862 } }, "covered_min": 85, "window_min": 85, "qualifies": true }, { "local_date": "1997-05-21", "window": { "start": { "local": "1997-05-21T19:01:23+04:00", "utc": "1997-05-21T15:01:23Z", "ms": 864226882861.4218 }, "end": { "local": "1997-05-21T20:26:03+04:00", "utc": "1997-05-21T16:26:03Z", "ms": 864231963363.3474 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:27 on Tue 20 May to 13:39 on Wed 21 May.", "fact": "1997-05-20T09:27:01Z → 1997-05-21T09:38:31Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:01–20:26 on the 20th, 19:01–20:26 on the 21st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 85 of 85 minutes on the 20th and 0 of 85 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 19371 s" }, { "step": "ruling", "text": "Nṛsiṃha Caturdaśī, Abu Dhabi, 1997: Tuesday 20 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "nrisimha-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Nrsimha caturdasi (pradosa vyapini — if it occurs on two successive days, the second day is to be observed, special when combined with naksatra 'Svati', yoga 'Siddhi' and 'Saturday')." } ], "not_evaluated": "The row calls the day special with Svātī nakṣatra, Siddhi yoga and a Saturday; none is tested.", "kaala": "pradosha", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-20", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Nṛsiṃha Caturdaśī (Narasimha Jayanti) 1997 falls on Tuesday 20 May. Caturdaśī runs from 13:27 on Tue 20 May to 13:39 on Wed 21 May and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/nrisimha-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/buddha-purnima", "festival": "buddha-purnima", "name": "Buddha Pūrṇimā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1814, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-05-21T13:38:31+04:00", "utc": "1997-05-21T09:38:31Z", "ms": 864207511496.358 }, "end": { "local": "1997-05-22T13:13:24+04:00", "utc": "1997-05-22T09:13:24Z", "ms": 864292403595.4349 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-21T13:38:31+04:00", "utc": "1997-05-21T09:38:31Z", "ms": 864207511496.358 }, "end": { "local": "1997-05-22T13:13:24+04:00", "utc": "1997-05-22T09:13:24Z", "ms": 864292403595.4349 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-21", "window": { "start": { "local": "1997-05-21T11:55:06+04:00", "utc": "1997-05-21T07:55:06Z", "ms": 864201305533.8173 }, "end": { "local": "1997-05-21T12:43:06+04:00", "utc": "1997-05-21T08:43:06Z", "ms": 864204185533.8173 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-05-22", "window": { "start": { "local": "1997-05-22T11:55:10+04:00", "utc": "1997-05-22T07:55:10Z", "ms": 864287709500.1743 }, "end": { "local": "1997-05-22T12:43:10+04:00", "utc": "1997-05-22T08:43:10Z", "ms": 864290589500.1743 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:39 on Wed 21 May to 13:13 on Thu 22 May.", "fact": "1997-05-21T09:38:31Z → 1997-05-22T09:13:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 21st, 11:55–12:43 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1814 s" }, { "step": "ruling", "text": "Buddha Pūrṇimā, Abu Dhabi, 1997: Thursday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "buddha-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-22", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Buddha Pūrṇimā 1997 falls on Thursday 22 May. Pūrṇimā runs from 13:39 on Wed 21 May to 13:13 on Thu 22 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/buddha-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sampat-gauri-vrata", "festival": "sampat-gauri-vrata", "name": "Sampat Gaurī Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1814, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-05-21T13:38:31+04:00", "utc": "1997-05-21T09:38:31Z", "ms": 864207511496.358 }, "end": { "local": "1997-05-22T13:13:24+04:00", "utc": "1997-05-22T09:13:24Z", "ms": 864292403595.4349 }, "month": { "amanta": 1, "purnimanta": 1, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Vaiśākha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-21T13:38:31+04:00", "utc": "1997-05-21T09:38:31Z", "ms": 864207511496.358 }, "end": { "local": "1997-05-22T13:13:24+04:00", "utc": "1997-05-22T09:13:24Z", "ms": 864292403595.4349 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-05-21", "window": { "start": { "local": "1997-05-21T11:55:06+04:00", "utc": "1997-05-21T07:55:06Z", "ms": 864201305533.8173 }, "end": { "local": "1997-05-21T12:43:06+04:00", "utc": "1997-05-21T08:43:06Z", "ms": 864204185533.8173 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-05-22", "window": { "start": { "local": "1997-05-22T11:55:10+04:00", "utc": "1997-05-22T07:55:10Z", "ms": 864287709500.1743 }, "end": { "local": "1997-05-22T12:43:10+04:00", "utc": "1997-05-22T08:43:10Z", "ms": 864290589500.1743 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 13:39 on Wed 21 May to 13:13 on Thu 22 May.", "fact": "1997-05-21T09:38:31Z → 1997-05-22T09:13:24Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:55–12:43 on the 21st, 11:55–12:43 on the 22nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 21st and 48 of 48 on the 22nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1814 s" }, { "step": "ruling", "text": "Sampat Gaurī Vrata, Abu Dhabi, 1997: Thursday 22 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sampat-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Sampat gauri vrata (paraviddha), Phuladola (Bengal & Orissa) (paraviddha), Gandhesvari puja (Bengal) (purvaviddha), Buddha purnima, Vaisakhi purnima." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-22", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Sampat Gaurī Vrata 1997 falls on Thursday 22 May. Pūrṇimā runs from 13:39 on Wed 21 May to 13:13 on Thu 22 May and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sampat-gauri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-05-25", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-05-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33505, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-05-25T09:11:31+04:00", "utc": "1997-05-25T05:11:31Z", "ms": 864537091196.434 }, "end": { "local": "1997-05-26T07:16:01+04:00", "utc": "1997-05-26T03:16:01Z", "ms": 864616561487.7266 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-25T09:11:31+04:00", "utc": "1997-05-25T05:11:31Z", "ms": 864537091196.434 }, "end": { "local": "1997-05-26T07:16:01+04:00", "utc": "1997-05-26T03:16:01Z", "ms": 864616561487.7266 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-05-24", "window": { "start": { "local": "1997-05-24T21:02:36+04:00", "utc": "1997-05-24T17:02:36Z", "ms": 864493355642.3048 }, "end": { "local": "1997-05-24T21:02:36+04:00", "utc": "1997-05-24T17:02:36Z", "ms": 864493355642.3048 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-05-25", "window": { "start": { "local": "1997-05-25T21:57:36+04:00", "utc": "1997-05-25T17:57:36Z", "ms": 864583056475.3015 }, "end": { "local": "1997-05-25T21:57:36+04:00", "utc": "1997-05-25T17:57:36Z", "ms": 864583056475.3015 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 09:12 on Sun 25 May to 07:16 on Mon 26 May.", "fact": "1997-05-25T05:11:31Z → 1997-05-26T03:16:01Z" }, { "step": "kaala", "text": "Moonrise is at 21:03 on the 24th and 21:58 on the 25th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 24th and is on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33505 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Sunday 25 May.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-05-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-05-25", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Sunday 25 May. Caturthī runs from 09:12 on Sun 25 May to 07:16 on Mon 26 May and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-05-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-06-01", "festival": "ekadashi", "name": "Aparā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 39296, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-05-31T18:39:01+04:00", "utc": "1997-05-31T14:39:01Z", "ms": 865089541076.5669 }, "end": { "local": "1997-06-01T16:42:18+04:00", "utc": "1997-06-01T12:42:18Z", "ms": 865168937535.8234 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-05-31T18:39:01+04:00", "utc": "1997-05-31T14:39:01Z", "ms": 865089541076.5669 }, "end": { "local": "1997-06-01T16:42:18+04:00", "utc": "1997-06-01T12:42:18Z", "ms": 865168937535.8234 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-06-01", "window": { "start": { "local": "1997-06-01T05:33:57+04:00", "utc": "1997-06-01T01:33:57Z", "ms": 865128837387.6588 }, "end": { "local": "1997-06-01T05:33:57+04:00", "utc": "1997-06-01T01:33:57Z", "ms": 865128837387.6588 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-06-02", "window": { "start": { "local": "1997-06-02T05:33:49+04:00", "utc": "1997-06-02T01:33:49Z", "ms": 865215229181.3516 }, "end": { "local": "1997-06-02T05:33:49+04:00", "utc": "1997-06-02T01:33:49Z", "ms": 865215229181.3516 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:39 on Sat 31 May to 16:42 on Sun 1 Jun.", "fact": "1997-05-31T14:39:01Z → 1997-06-01T12:42:18Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 1st and 05:34 on the 2nd.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 1st and is not on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 39296 s" }, { "step": "ruling", "text": "Aparā Ekādaśī, Abu Dhabi, 1997: Sunday 1 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-01", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Aparā Ekādaśī 1997 falls on Sunday 1 June. Ekādaśī runs from 18:39 on Sat 31 May to 16:42 on Sun 1 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-06-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-06-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15184, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-06-02T14:53:59+04:00", "utc": "1997-06-02T10:53:59Z", "ms": 865248838606.4716 }, "end": { "local": "1997-06-03T13:17:59+04:00", "utc": "1997-06-03T09:17:59Z", "ms": 865329479198.4283 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-02T14:53:59+04:00", "utc": "1997-06-02T10:53:59Z", "ms": 865248838606.4716 }, "end": { "local": "1997-06-03T13:17:59+04:00", "utc": "1997-06-03T09:17:59Z", "ms": 865329479198.4283 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-06-02", "window": { "start": { "local": "1997-06-02T19:07:02+04:00", "utc": "1997-06-02T15:07:02Z", "ms": 865264022225.6959 }, "end": { "local": "1997-06-02T20:30:36+04:00", "utc": "1997-06-02T16:30:36Z", "ms": 865269035553.1736 } }, "covered_min": 84, "window_min": 84, "qualifies": true }, { "local_date": "1997-06-03", "window": { "start": { "local": "1997-06-03T19:07:28+04:00", "utc": "1997-06-03T15:07:28Z", "ms": 865350448393.611 }, "end": { "local": "1997-06-03T20:30:57+04:00", "utc": "1997-06-03T16:30:57Z", "ms": 865355457458.2615 } }, "covered_min": 0, "window_min": 83, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:54 on Mon 2 Jun to 13:18 on Tue 3 Jun.", "fact": "1997-06-02T10:53:59Z → 1997-06-03T09:17:59Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:07–20:31 on the 2nd, 19:07–20:31 on the 3rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 84 of 84 minutes on the 2nd and 0 of 83 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15184 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Monday 2 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-02", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Monday 2 June. Trayodaśī runs from 14:54 on Mon 2 Jun to 13:18 on Tue 3 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-06-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-06-03", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38313, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-06-03T13:17:59+04:00", "utc": "1997-06-03T09:17:59Z", "ms": 865329479198.4283 }, "end": { "local": "1997-06-04T11:59:17+04:00", "utc": "1997-06-04T07:59:17Z", "ms": 865411156986.5911 }, "month": { "amanta": 1, "purnimanta": 2, "adhika": false, "amanta_name": "Vaiśākha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-03T13:17:59+04:00", "utc": "1997-06-03T09:17:59Z", "ms": 865329479198.4283 }, "end": { "local": "1997-06-04T11:59:17+04:00", "utc": "1997-06-04T07:59:17Z", "ms": 865411156986.5911 } }, "kaala": "nishita", "days": [ { "local_date": "1997-06-03", "window": { "start": { "local": "1997-06-03T23:56:32+04:00", "utc": "1997-06-03T19:56:32Z", "ms": 865367792386.0502 }, "end": { "local": "1997-06-04T00:44:32+04:00", "utc": "1997-06-03T20:44:32Z", "ms": 865370672386.0502 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-06-04", "window": { "start": { "local": "1997-06-04T23:56:43+04:00", "utc": "1997-06-04T19:56:43Z", "ms": 865454202928.7495 }, "end": { "local": "1997-06-05T00:44:43+04:00", "utc": "1997-06-04T20:44:43Z", "ms": 865457082928.7495 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 13:18 on Tue 3 Jun to 11:59 on Wed 4 Jun.", "fact": "1997-06-03T09:17:59Z → 1997-06-04T07:59:17Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:57–00:45 on the 3rd, 23:57–00:45 on the 4th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 38313 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Tuesday 3 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-03", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Tuesday 3 June. Caturdaśī runs from 13:18 on Tue 3 Jun to 11:59 on Wed 4 Jun and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-06-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rambha-tritiya", "festival": "rambha-tritiya", "name": "Rambhā Tṛtīyā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1786, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-06-07T10:43:35+04:00", "utc": "1997-06-07T06:43:35Z", "ms": 865665815057.3463 }, "end": { "local": "1997-06-08T11:27:43+04:00", "utc": "1997-06-08T07:27:43Z", "ms": 865754862736.8701 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-07T10:43:35+04:00", "utc": "1997-06-07T06:43:35Z", "ms": 865665815057.3463 }, "end": { "local": "1997-06-08T11:27:43+04:00", "utc": "1997-06-08T07:27:43Z", "ms": 865754862736.8701 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-06-07", "window": { "start": { "local": "1997-06-07T11:57:17+04:00", "utc": "1997-06-07T07:57:17Z", "ms": 865670237057.325 }, "end": { "local": "1997-06-07T12:45:17+04:00", "utc": "1997-06-07T08:45:17Z", "ms": 865673117057.325 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-06-08", "window": { "start": { "local": "1997-06-08T11:57:28+04:00", "utc": "1997-06-08T07:57:28Z", "ms": 865756648241.0643 }, "end": { "local": "1997-06-08T12:45:28+04:00", "utc": "1997-06-08T08:45:28Z", "ms": 865759528241.0643 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 10:44 on Sat 7 Jun to 11:28 on Sun 8 Jun.", "fact": "1997-06-07T06:43:35Z → 1997-06-08T07:27:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 7th, 11:57–12:45 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 7th and 0 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 1786 s" }, { "step": "ruling", "text": "Rambhā Tṛtīyā, Abu Dhabi, 1997: Saturday 7 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rambha-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Rambha trtiya (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-07", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Rambhā Tṛtīyā 1997 falls on Saturday 7 June. Tṛtīyā runs from 10:44 on Sat 7 Jun to 11:28 on Sun 8 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rambha-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-06-08", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-08", "confidence": "boundary", "boundary_reasons": [ "margin", "tie-break-unstated" ], "boundary_margin_s": 214, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-06-08T11:27:43+04:00", "utc": "1997-06-08T07:27:43Z", "ms": 865754862736.8701 }, "end": { "local": "1997-06-09T12:49:14+04:00", "utc": "1997-06-09T08:49:14Z", "ms": 865846154012.704 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-08T11:27:43+04:00", "utc": "1997-06-08T07:27:43Z", "ms": 865754862736.8701 }, "end": { "local": "1997-06-09T12:49:14+04:00", "utc": "1997-06-09T08:49:14Z", "ms": 865846154012.704 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-06-08", "window": { "start": { "local": "1997-06-08T11:57:28+04:00", "utc": "1997-06-08T07:57:28Z", "ms": 865756648241.0643 }, "end": { "local": "1997-06-08T12:45:28+04:00", "utc": "1997-06-08T08:45:28Z", "ms": 865759528241.0643 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-06-09", "window": { "start": { "local": "1997-06-09T11:57:40+04:00", "utc": "1997-06-09T07:57:40Z", "ms": 865843059674.2377 }, "end": { "local": "1997-06-09T12:45:40+04:00", "utc": "1997-06-09T08:45:40Z", "ms": 865845939674.2377 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:28 on Sun 8 Jun to 12:49 on Mon 9 Jun.", "fact": "1997-06-08T07:27:43Z → 1997-06-09T08:49:14Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 8th, 11:58–12:46 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both middays qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 214 s < 300 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Sunday 8 June.", "fact": "confidence: boundary (margin, tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-08", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-08", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Sunday 8 June. Caturthī runs from 11:28 on Sun 8 Jun to 12:49 on Mon 9 Jun and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested. It is 3 min 34 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-06-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/aranya-gauri-vrata", "festival": "aranya-gauri-vrata", "name": "Araṇya Gaurī Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7103, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-06-10T14:44:14+04:00", "utc": "1997-06-10T10:44:14Z", "ms": 865939454060.3368 }, "end": { "local": "1997-06-11T17:04:06+04:00", "utc": "1997-06-11T13:04:06Z", "ms": 866034245937.7888 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-10T14:44:14+04:00", "utc": "1997-06-10T10:44:14Z", "ms": 865939454060.3368 }, "end": { "local": "1997-06-11T17:04:06+04:00", "utc": "1997-06-11T13:04:06Z", "ms": 866034245937.7888 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-06-10", "window": { "start": { "local": "1997-06-10T11:57:51+04:00", "utc": "1997-06-10T07:57:51Z", "ms": 865929471333.56 }, "end": { "local": "1997-06-10T12:45:51+04:00", "utc": "1997-06-10T08:45:51Z", "ms": 865932351333.56 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-06-11", "window": { "start": { "local": "1997-06-11T11:58:03+04:00", "utc": "1997-06-11T07:58:03Z", "ms": 866015883195.9629 }, "end": { "local": "1997-06-11T12:46:03+04:00", "utc": "1997-06-11T08:46:03Z", "ms": 866018763195.9629 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:44 on Tue 10 Jun to 17:04 on Wed 11 Jun.", "fact": "1997-06-10T10:44:14Z → 1997-06-11T13:04:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 10th, 11:58–12:46 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7103 s" }, { "step": "ruling", "text": "Araṇya Gaurī Vrata, Abu Dhabi, 1997: Wednesday 11 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aranya-gauri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Araṇya Gaurī Vrata 1997 falls on Wednesday 11 June. Ṣaṣṭhī runs from 14:44 on Tue 10 Jun to 17:04 on Wed 11 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/aranya-gauri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/skanda-shashthi-jyaishtha", "festival": "skanda-shashthi-jyaishtha", "name": "Skanda Ṣaṣṭhī (Jyaiṣṭha)", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7103, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-06-10T14:44:14+04:00", "utc": "1997-06-10T10:44:14Z", "ms": 865939454060.3368 }, "end": { "local": "1997-06-11T17:04:06+04:00", "utc": "1997-06-11T13:04:06Z", "ms": 866034245937.7888 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-10T14:44:14+04:00", "utc": "1997-06-10T10:44:14Z", "ms": 865939454060.3368 }, "end": { "local": "1997-06-11T17:04:06+04:00", "utc": "1997-06-11T13:04:06Z", "ms": 866034245937.7888 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-06-10", "window": { "start": { "local": "1997-06-10T11:57:51+04:00", "utc": "1997-06-10T07:57:51Z", "ms": 865929471333.56 }, "end": { "local": "1997-06-10T12:45:51+04:00", "utc": "1997-06-10T08:45:51Z", "ms": 865932351333.56 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-06-11", "window": { "start": { "local": "1997-06-11T11:58:03+04:00", "utc": "1997-06-11T07:58:03Z", "ms": 866015883195.9629 }, "end": { "local": "1997-06-11T12:46:03+04:00", "utc": "1997-06-11T08:46:03Z", "ms": 866018763195.9629 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 14:44 on Tue 10 Jun to 17:04 on Wed 11 Jun.", "fact": "1997-06-10T10:44:14Z → 1997-06-11T13:04:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 10th, 11:58–12:46 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 48 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 7103 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī (Jyaiṣṭha), Abu Dhabi, 1997: Wednesday 11 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi-jyaishtha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Aranya sasthi, Aranya gauri vrata, (paraviddha), Skanda sasthi, (purvaviddha), Sitala sasthi yatra (Orissa)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Skanda Ṣaṣṭhī (Jyaiṣṭha) 1997 falls on Wednesday 11 June. Ṣaṣṭhī runs from 14:44 on Tue 10 Jun to 17:04 on Wed 11 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/skanda-shashthi-jyaishtha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-06-16", "festival": "ekadashi", "name": "Nirjalā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10243, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-06-16T01:49:01+04:00", "utc": "1997-06-15T21:49:01Z", "ms": 866411340768.7058 }, "end": { "local": "1997-06-17T02:43:21+04:00", "utc": "1997-06-16T22:43:21Z", "ms": 866501000902.4242 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-16T01:49:01+04:00", "utc": "1997-06-15T21:49:01Z", "ms": 866411340768.7058 }, "end": { "local": "1997-06-17T02:43:21+04:00", "utc": "1997-06-16T22:43:21Z", "ms": 866501000902.4242 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-06-16", "window": { "start": { "local": "1997-06-16T05:33:55+04:00", "utc": "1997-06-16T01:33:55Z", "ms": 866424835025.8577 }, "end": { "local": "1997-06-16T05:33:55+04:00", "utc": "1997-06-16T01:33:55Z", "ms": 866424835025.8577 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-06-17", "window": { "start": { "local": "1997-06-17T05:34:03+04:00", "utc": "1997-06-17T01:34:03Z", "ms": 866511243459.7902 }, "end": { "local": "1997-06-17T05:34:03+04:00", "utc": "1997-06-17T01:34:03Z", "ms": 866511243459.7902 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 01:49 on Mon 16 Jun to 02:43 on Tue 17 Jun.", "fact": "1997-06-15T21:49:01Z → 1997-06-16T22:43:21Z" }, { "step": "kaala", "text": "Sunrise is at 05:34 on the 16th and 05:34 on the 17th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 16th and is not on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10243 s" }, { "step": "ruling", "text": "Nirjalā Ekādaśī, Abu Dhabi, 1997: Monday 16 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-16", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Nirjalā Ekādaśī 1997 falls on Monday 16 June. Ekādaśī runs from 01:49 on Mon 16 Jun to 02:43 on Tue 17 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-06-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shri-rama-dvadashi", "festival": "shri-rama-dvadashi", "name": "Śrī Rāma Dvādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32850, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-06-17T02:43:21+04:00", "utc": "1997-06-16T22:43:21Z", "ms": 866501000902.4242 }, "end": { "local": "1997-06-18T02:52:00+04:00", "utc": "1997-06-17T22:52:00Z", "ms": 866587920254.0829 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-17T02:43:21+04:00", "utc": "1997-06-16T22:43:21Z", "ms": 866501000902.4242 }, "end": { "local": "1997-06-18T02:52:00+04:00", "utc": "1997-06-17T22:52:00Z", "ms": 866587920254.0829 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-06-17", "window": { "start": { "local": "1997-06-17T11:59:17+04:00", "utc": "1997-06-17T07:59:17Z", "ms": 866534357370.6355 }, "end": { "local": "1997-06-17T12:47:17+04:00", "utc": "1997-06-17T08:47:17Z", "ms": 866537237370.6355 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-06-18", "window": { "start": { "local": "1997-06-18T11:59:30+04:00", "utc": "1997-06-18T07:59:30Z", "ms": 866620770028.6879 }, "end": { "local": "1997-06-18T12:47:30+04:00", "utc": "1997-06-18T08:47:30Z", "ms": 866623650028.6879 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 02:43 on Tue 17 Jun to 02:52 on Wed 18 Jun.", "fact": "1997-06-16T22:43:21Z → 1997-06-17T22:52:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:59–12:47 on the 17th, 12:00–12:48 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 17th and 0 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 32850 s" }, { "step": "ruling", "text": "Śrī Rāma Dvādaśī, Abu Dhabi, 1997: Tuesday 17 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shri-rama-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Sri Rama dvadasi (purvaviddha), Campaka dvadasi (Orissa) (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-17", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śrī Rāma Dvādaśī 1997 falls on Tuesday 17 June. Dvādaśī runs from 02:43 on Tue 17 Jun to 02:52 on Wed 18 Jun and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shri-rama-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-06-18", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20405, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-06-18T02:52:00+04:00", "utc": "1997-06-17T22:52:00Z", "ms": 866587920254.0829 }, "end": { "local": "1997-06-19T02:15:45+04:00", "utc": "1997-06-18T22:15:45Z", "ms": 866672144869.5704 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-18T02:52:00+04:00", "utc": "1997-06-17T22:52:00Z", "ms": 866587920254.0829 }, "end": { "local": "1997-06-19T02:15:45+04:00", "utc": "1997-06-18T22:15:45Z", "ms": 866672144869.5704 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-06-17", "window": { "start": { "local": "1997-06-17T19:12:31+04:00", "utc": "1997-06-17T15:12:31Z", "ms": 866560351281.4808 }, "end": { "local": "1997-06-17T20:35:25+04:00", "utc": "1997-06-17T16:35:25Z", "ms": 866565324826.7704 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "1997-06-18", "window": { "start": { "local": "1997-06-18T19:12:47+04:00", "utc": "1997-06-18T15:12:47Z", "ms": 866646767186.2236 }, "end": { "local": "1997-06-18T20:35:40+04:00", "utc": "1997-06-18T16:35:40Z", "ms": 866651739993.5851 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 02:52 on Wed 18 Jun to 02:16 on Thu 19 Jun.", "fact": "1997-06-17T22:52:00Z → 1997-06-18T22:15:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:13–20:35 on the 17th, 19:13–20:36 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 83 minutes on the 17th and 83 of 83 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20405 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Wednesday 18 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Wednesday 18 June. Trayodaśī runs from 02:52 on Wed 18 Jun to 02:16 on Thu 19 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-06-18", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vata-savitri-vrata", "festival": "vata-savitri-vrata", "name": "Vaṭa Sāvitrī Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9160, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-06-20T00:59:02+04:00", "utc": "1997-06-19T20:59:02Z", "ms": 866753942462.0612 }, "end": { "local": "1997-06-20T23:08:49+04:00", "utc": "1997-06-20T19:08:49Z", "ms": 866833728776.0581 }, "month": { "amanta": 2, "purnimanta": 2, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Jyeṣṭha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-20T00:59:02+04:00", "utc": "1997-06-19T20:59:02Z", "ms": 866753942462.0612 }, "end": { "local": "1997-06-20T23:08:49+04:00", "utc": "1997-06-20T19:08:49Z", "ms": 866833728776.0581 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-06-19", "window": { "start": { "local": "1997-06-19T19:13:02+04:00", "utc": "1997-06-19T15:13:02Z", "ms": 866733182189.5515 }, "end": { "local": "1997-06-19T20:35:55+04:00", "utc": "1997-06-19T16:35:55Z", "ms": 866738154504.551 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "1997-06-20", "window": { "start": { "local": "1997-06-20T19:13:16+04:00", "utc": "1997-06-20T15:13:16Z", "ms": 866819596270.9077 }, "end": { "local": "1997-06-20T20:36:08+04:00", "utc": "1997-06-20T16:36:08Z", "ms": 866824568339.3641 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 00:59 on Fri 20 Jun to 23:09 on Fri 20 Jun.", "fact": "1997-06-19T20:59:02Z → 1997-06-20T19:08:49Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:13–20:36 on the 19th, 19:13–20:36 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 0 of 83 minutes on the 19th and 83 of 83 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 9160 s" }, { "step": "ruling", "text": "Vaṭa Sāvitrī Vrata, Abu Dhabi, 1997: Friday 20 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vata-savitri-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Vata-savitri vrata (Deccan) (pradosavyapini, purvaviddha), Snanayatra (Bengal & Orissa) (paraviddha)." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-20", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vaṭa Sāvitrī Vrata 1997 falls on Friday 20 June. Pūrṇimā runs from 00:59 on Fri 20 Jun to 23:09 on Fri 20 Jun and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vata-savitri-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-06-23", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21294, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-06-23T15:40:40+04:00", "utc": "1997-06-23T11:40:40Z", "ms": 867066039922.9744 }, "end": { "local": "1997-06-24T12:59:12+04:00", "utc": "1997-06-24T08:59:12Z", "ms": 867142751769.3138 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-23T15:40:40+04:00", "utc": "1997-06-23T11:40:40Z", "ms": 867066039922.9744 }, "end": { "local": "1997-06-24T12:59:12+04:00", "utc": "1997-06-24T08:59:12Z", "ms": 867142751769.3138 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-06-23", "window": { "start": { "local": "1997-06-23T21:35:34+04:00", "utc": "1997-06-23T17:35:34Z", "ms": 867087334148.7979 }, "end": { "local": "1997-06-23T21:35:34+04:00", "utc": "1997-06-23T17:35:34Z", "ms": 867087334148.7979 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-06-24", "window": { "start": { "local": "1997-06-24T22:24:12+04:00", "utc": "1997-06-24T18:24:12Z", "ms": 867176652253.7479 }, "end": { "local": "1997-06-24T22:24:12+04:00", "utc": "1997-06-24T18:24:12Z", "ms": 867176652253.7479 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 15:41 on Mon 23 Jun to 12:59 on Tue 24 Jun.", "fact": "1997-06-23T11:40:40Z → 1997-06-24T08:59:12Z" }, { "step": "kaala", "text": "Moonrise is at 21:36 on the 23rd and 22:24 on the 24th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 23rd and is not on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21294 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Monday 23 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-23", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Monday 23 June. Caturthī runs from 15:41 on Mon 23 Jun to 12:59 on Tue 24 Jun and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-06-23", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-06-30", "festival": "ekadashi", "name": "Yoginī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-06-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 17963, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-06-30T00:37:52+04:00", "utc": "1997-06-29T20:37:52Z", "ms": 867616672111.4044 }, "end": { "local": "1997-06-30T23:30:37+04:00", "utc": "1997-06-30T19:30:37Z", "ms": 867699036528.9017 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-06-30T00:37:52+04:00", "utc": "1997-06-29T20:37:52Z", "ms": 867616672111.4044 }, "end": { "local": "1997-06-30T23:30:37+04:00", "utc": "1997-06-30T19:30:37Z", "ms": 867699036528.9017 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-06-30", "window": { "start": { "local": "1997-06-30T05:37:15+04:00", "utc": "1997-06-30T01:37:15Z", "ms": 867634634987.687 }, "end": { "local": "1997-06-30T05:37:15+04:00", "utc": "1997-06-30T01:37:15Z", "ms": 867634634987.687 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-07-01", "window": { "start": { "local": "1997-07-01T05:37:34+04:00", "utc": "1997-07-01T01:37:34Z", "ms": 867721054244.9983 }, "end": { "local": "1997-07-01T05:37:34+04:00", "utc": "1997-07-01T01:37:34Z", "ms": 867721054244.9983 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:38 on Mon 30 Jun to 23:31 on Mon 30 Jun.", "fact": "1997-06-29T20:37:52Z → 1997-06-30T19:30:37Z" }, { "step": "kaala", "text": "Sunrise is at 05:37 on the 30th and 05:38 on the 1st.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 30th and is not on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 17963 s" }, { "step": "ruling", "text": "Yoginī Ekādaśī, Abu Dhabi, 1997: Monday 30 June.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-06-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-06-30", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Yoginī Ekādaśī 1997 falls on Monday 30 June. Ekādaśī runs from 00:38 on Mon 30 Jun to 23:31 on Mon 30 Jun and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-06-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-07-02", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5903, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-07-01T22:42:39+04:00", "utc": "1997-07-01T18:42:39Z", "ms": 867782559418.6501 }, "end": { "local": "1997-07-02T22:16:17+04:00", "utc": "1997-07-02T18:16:17Z", "ms": 867867376633.727 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-01T22:42:39+04:00", "utc": "1997-07-01T18:42:39Z", "ms": 867782559418.6501 }, "end": { "local": "1997-07-02T22:16:17+04:00", "utc": "1997-07-02T18:16:17Z", "ms": 867867376633.727 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-07-01", "window": { "start": { "local": "1997-07-01T19:14:44+04:00", "utc": "1997-07-01T15:14:44Z", "ms": 867770084084.3307 }, "end": { "local": "1997-07-01T20:37:50+04:00", "utc": "1997-07-01T16:37:50Z", "ms": 867775069560.239 } }, "covered_min": 0, "window_min": 83, "qualifies": false }, { "local_date": "1997-07-02", "window": { "start": { "local": "1997-07-02T19:14:46+04:00", "utc": "1997-07-02T15:14:46Z", "ms": 867856485684.8187 }, "end": { "local": "1997-07-02T20:37:54+04:00", "utc": "1997-07-02T16:37:54Z", "ms": 867861473817.6592 } }, "covered_min": 83, "window_min": 83, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:43 on Tue 1 Jul to 22:16 on Wed 2 Jul.", "fact": "1997-07-01T18:42:39Z → 1997-07-02T18:16:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:15–20:38 on the 1st, 19:15–20:38 on the 2nd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 83 minutes on the 1st and 83 of 83 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5903 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Wednesday 2 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-02", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Wednesday 2 July. Trayodaśī runs from 22:43 on Tue 1 Jul to 22:16 on Wed 2 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-07-02", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6375, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-07-02T22:16:17+04:00", "utc": "1997-07-02T18:16:17Z", "ms": 867867376633.727 }, "end": { "local": "1997-07-03T22:14:18+04:00", "utc": "1997-07-03T18:14:18Z", "ms": 867953658120.7712 }, "month": { "amanta": 2, "purnimanta": 3, "adhika": false, "amanta_name": "Jyeṣṭha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-02T22:16:17+04:00", "utc": "1997-07-02T18:16:17Z", "ms": 867867376633.727 }, "end": { "local": "1997-07-03T22:14:18+04:00", "utc": "1997-07-03T18:14:18Z", "ms": 867953658120.7712 } }, "kaala": "nishita", "days": [ { "local_date": "1997-07-02", "window": { "start": { "local": "1997-07-03T00:02:31+04:00", "utc": "1997-07-02T20:02:31Z", "ms": 867873751182.9705 }, "end": { "local": "1997-07-03T00:50:31+04:00", "utc": "1997-07-02T20:50:31Z", "ms": 867876631182.9705 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-07-03", "window": { "start": { "local": "1997-07-04T00:02:42+04:00", "utc": "1997-07-03T20:02:42Z", "ms": 867960162461.648 }, "end": { "local": "1997-07-04T00:50:42+04:00", "utc": "1997-07-03T20:50:42Z", "ms": 867963042461.648 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:16 on Wed 2 Jul to 22:14 on Thu 3 Jul.", "fact": "1997-07-02T18:16:17Z → 1997-07-03T18:14:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:03–00:51 on the 2nd, 00:03–00:51 on the 3rd.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 6375 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Wednesday 2 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-02", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Wednesday 2 July. Caturdaśī runs from 22:16 on Wed 2 Jul to 22:14 on Thu 3 Jul and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-07-02", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rathayatra", "festival": "rathayatra", "name": "Rathayātrā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 38651, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1997-07-05T23:35:04+04:00", "utc": "1997-07-05T19:35:04Z", "ms": 868131303617.2887 }, "end": { "local": "1997-07-07T01:01:06+04:00", "utc": "1997-07-06T21:01:06Z", "ms": 868222866176.5715 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-05T23:35:04+04:00", "utc": "1997-07-05T19:35:04Z", "ms": 868131303617.2887 }, "end": { "local": "1997-07-07T01:01:06+04:00", "utc": "1997-07-06T21:01:06Z", "ms": 868222866176.5715 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-07-05", "window": { "start": { "local": "1997-07-05T12:02:52+04:00", "utc": "1997-07-05T08:02:52Z", "ms": 868089772471.5896 }, "end": { "local": "1997-07-05T12:50:52+04:00", "utc": "1997-07-05T08:50:52Z", "ms": 868092652471.5896 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-07-06", "window": { "start": { "local": "1997-07-06T12:03:03+04:00", "utc": "1997-07-06T08:03:03Z", "ms": 868176182504.0762 }, "end": { "local": "1997-07-06T12:51:03+04:00", "utc": "1997-07-06T08:51:03Z", "ms": 868179062504.0762 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 23:35 on Sat 5 Jul to 01:01 on Mon 7 Jul.", "fact": "1997-07-05T19:35:04Z → 1997-07-06T21:01:06Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 5th, 12:03–12:51 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 38651 s" }, { "step": "ruling", "text": "Rathayātrā, Abu Dhabi, 1997: Sunday 6 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rathayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Rathayatra (paraviddha, special when combined with naksatra 'Pusya')" } ], "not_evaluated": "The row calls the day special with Puṣya nakṣatra; the nakṣatra is not tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Rathayātrā 1997 falls on Sunday 6 July. Dvitīyā runs from 23:35 on Sat 5 Jul to 01:01 on Mon 7 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rathayatra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-07-08", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 24529, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-07-08T02:56:06+04:00", "utc": "1997-07-07T22:56:06Z", "ms": 868316165907.0115 }, "end": { "local": "1997-07-09T05:14:41+04:00", "utc": "1997-07-09T01:14:41Z", "ms": 868410881466.5193 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-08T02:56:06+04:00", "utc": "1997-07-07T22:56:06Z", "ms": 868316165907.0115 }, "end": { "local": "1997-07-09T05:14:41+04:00", "utc": "1997-07-09T01:14:41Z", "ms": 868410881466.5193 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-07-08", "window": { "start": { "local": "1997-07-08T12:03:21+04:00", "utc": "1997-07-08T08:03:21Z", "ms": 868349001453.7053 }, "end": { "local": "1997-07-08T12:51:21+04:00", "utc": "1997-07-08T08:51:21Z", "ms": 868351881453.7053 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-07-09", "window": { "start": { "local": "1997-07-09T12:03:30+04:00", "utc": "1997-07-09T08:03:30Z", "ms": 868435410328.4136 }, "end": { "local": "1997-07-09T12:51:30+04:00", "utc": "1997-07-09T08:51:30Z", "ms": 868438290328.4136 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:56 on Tue 8 Jul to 05:15 on Wed 9 Jul.", "fact": "1997-07-07T22:56:06Z → 1997-07-09T01:14:41Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 8th, 12:04–12:52 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 24529 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Tuesday 8 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Tuesday 8 July. Caturthī runs from 02:56 on Tue 8 Jul to 05:15 on Wed 9 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-07-08", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/skanda-panchami", "festival": "skanda-panchami", "name": "Skanda Pañcamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15366, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-07-09T05:14:41+04:00", "utc": "1997-07-09T01:14:41Z", "ms": 868410881466.5193 }, "end": { "local": "1997-07-10T07:47:33+04:00", "utc": "1997-07-10T03:47:33Z", "ms": 868506452770.942 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-09T05:14:41+04:00", "utc": "1997-07-09T01:14:41Z", "ms": 868410881466.5193 }, "end": { "local": "1997-07-10T07:47:33+04:00", "utc": "1997-07-10T03:47:33Z", "ms": 868506452770.942 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-07-09", "window": { "start": { "local": "1997-07-09T12:03:30+04:00", "utc": "1997-07-09T08:03:30Z", "ms": 868435410328.4136 }, "end": { "local": "1997-07-09T12:51:30+04:00", "utc": "1997-07-09T08:51:30Z", "ms": 868438290328.4136 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-07-10", "window": { "start": { "local": "1997-07-10T12:03:39+04:00", "utc": "1997-07-10T08:03:39Z", "ms": 868521818776.6375 }, "end": { "local": "1997-07-10T12:51:39+04:00", "utc": "1997-07-10T08:51:39Z", "ms": 868524698776.6375 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 05:15 on Wed 9 Jul to 07:48 on Thu 10 Jul.", "fact": "1997-07-09T01:14:41Z → 1997-07-10T03:47:33Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 9th, 12:04–12:52 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15366 s" }, { "step": "ruling", "text": "Skanda Pañcamī, Abu Dhabi, 1997: Wednesday 9 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Skanda pancami (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Skanda Pañcamī 1997 falls on Wednesday 9 July. Pañcamī runs from 05:15 on Wed 9 Jul to 07:48 on Thu 10 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/skanda-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vivasvat-saptami", "festival": "vivasvat-saptami", "name": "Vivasvat Saptamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 548, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-07-11T10:21:50+04:00", "utc": "1997-07-11T06:21:50Z", "ms": 868602110190.7344 }, "end": { "local": "1997-07-12T12:42:46+04:00", "utc": "1997-07-12T08:42:46Z", "ms": 868696965852.3319 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-11T10:21:50+04:00", "utc": "1997-07-11T06:21:50Z", "ms": 868602110190.7344 }, "end": { "local": "1997-07-12T12:42:46+04:00", "utc": "1997-07-12T08:42:46Z", "ms": 868696965852.3319 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-07-11", "window": { "start": { "local": "1997-07-11T12:03:47+04:00", "utc": "1997-07-11T08:03:47Z", "ms": 868608226780.012 }, "end": { "local": "1997-07-11T12:51:47+04:00", "utc": "1997-07-11T08:51:47Z", "ms": 868611106780.012 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-07-12", "window": { "start": { "local": "1997-07-12T12:03:54+04:00", "utc": "1997-07-12T08:03:54Z", "ms": 868694634321.3501 }, "end": { "local": "1997-07-12T12:51:54+04:00", "utc": "1997-07-12T08:51:54Z", "ms": 868697514321.3501 } }, "covered_min": 39, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Saptamī runs from 10:22 on Fri 11 Jul to 12:43 on Sat 12 Jul.", "fact": "1997-07-11T06:21:50Z → 1997-07-12T08:42:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 11th, 12:04–12:52 on the 12th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 48 of 48 minutes on the 11th and 39 of 48 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 548 s" }, { "step": "ruling", "text": "Vivasvat Saptamī, Abu Dhabi, 1997: Friday 11 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vivasvat-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Vivasvat saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vivasvat Saptamī 1997 falls on Friday 11 July. Saptamī runs from 10:22 on Fri 11 Jul to 12:43 on Sat 12 Jul and covers all of madhyāhna that midday. It also reaches the next midday for 39 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vivasvat-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-07-16", "festival": "ekadashi", "name": "Hariśayanī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 36465, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-07-15T16:15:15+04:00", "utc": "1997-07-15T12:15:15Z", "ms": 868968915046.483 }, "end": { "local": "1997-07-16T15:51:23+04:00", "utc": "1997-07-16T11:51:23Z", "ms": 869053883229.0754 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-15T16:15:15+04:00", "utc": "1997-07-15T12:15:15Z", "ms": 868968915046.483 }, "end": { "local": "1997-07-16T15:51:23+04:00", "utc": "1997-07-16T11:51:23Z", "ms": 869053883229.0754 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-07-15", "window": { "start": { "local": "1997-07-15T05:43:11+04:00", "utc": "1997-07-15T01:43:11Z", "ms": 868930991499.8759 }, "end": { "local": "1997-07-15T05:43:11+04:00", "utc": "1997-07-15T01:43:11Z", "ms": 868930991499.8759 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-07-16", "window": { "start": { "local": "1997-07-16T05:43:38+04:00", "utc": "1997-07-16T01:43:38Z", "ms": 869017418191.443 }, "end": { "local": "1997-07-16T05:43:38+04:00", "utc": "1997-07-16T01:43:38Z", "ms": 869017418191.443 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:15 on Tue 15 Jul to 15:51 on Wed 16 Jul.", "fact": "1997-07-15T12:15:15Z → 1997-07-16T11:51:23Z" }, { "step": "kaala", "text": "Sunrise is at 05:43 on the 15th and 05:44 on the 16th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 15th and is on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 36465 s" }, { "step": "ruling", "text": "Hariśayanī Ekādaśī, Abu Dhabi, 1997: Wednesday 16 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-16", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Hariśayanī Ekādaśī 1997 falls on Wednesday 16 July. Ekādaśī runs from 16:15 on Tue 15 Jul to 15:51 on Wed 16 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-07-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-07-17", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16397, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-07-17T14:39:27+04:00", "utc": "1997-07-17T10:39:27Z", "ms": 869135967109.2317 }, "end": { "local": "1997-07-18T12:44:51+04:00", "utc": "1997-07-18T08:44:51Z", "ms": 869215491392.2252 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-17T14:39:27+04:00", "utc": "1997-07-17T10:39:27Z", "ms": 869135967109.2317 }, "end": { "local": "1997-07-18T12:44:51+04:00", "utc": "1997-07-18T08:44:51Z", "ms": 869215491392.2252 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-07-17", "window": { "start": { "local": "1997-07-17T19:12:44+04:00", "utc": "1997-07-17T15:12:44Z", "ms": 869152364086.0752 }, "end": { "local": "1997-07-17T20:36:58+04:00", "utc": "1997-07-17T16:36:58Z", "ms": 869157418494.8389 } }, "covered_min": 84, "window_min": 84, "qualifies": true }, { "local_date": "1997-07-18", "window": { "start": { "local": "1997-07-18T19:12:26+04:00", "utc": "1997-07-18T15:12:26Z", "ms": 869238745979.8595 }, "end": { "local": "1997-07-18T20:36:46+04:00", "utc": "1997-07-18T16:36:46Z", "ms": 869243806432.7424 } }, "covered_min": 0, "window_min": 84, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 14:39 on Thu 17 Jul to 12:45 on Fri 18 Jul.", "fact": "1997-07-17T10:39:27Z → 1997-07-18T08:44:51Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:13–20:37 on the 17th, 19:12–20:37 on the 18th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 84 of 84 minutes on the 17th and 0 of 84 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16397 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Thursday 17 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-17", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Thursday 17 July. Trayodaśī runs from 14:39 on Thu 17 Jul to 12:45 on Fri 18 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-07-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vyasa-puja", "festival": "vyasa-puja", "name": "Vyāsa Pūjā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-19", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 3986, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 } }, "kaala": "udaya-3", "days": [ { "local_date": "1997-07-19", "window": { "start": { "local": "1997-07-19T05:44:59+04:00", "utc": "1997-07-19T01:44:59Z", "ms": 869276699376.4818 }, "end": { "local": "1997-07-19T08:26:25+04:00", "utc": "1997-07-19T04:26:25Z", "ms": 869286384827.1475 } }, "covered_min": 0, "window_min": 161, "qualifies": false }, { "local_date": "1997-07-20", "window": { "start": { "local": "1997-07-20T05:45:27+04:00", "utc": "1997-07-20T01:45:27Z", "ms": 869363126737.4039 }, "end": { "local": "1997-07-20T08:26:43+04:00", "utc": "1997-07-20T04:26:43Z", "ms": 869372802598.8678 } }, "covered_min": 95, "window_min": 161, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul.", "fact": "1997-07-19T06:15:25Z → 1997-07-20T03:20:17Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 05:45–08:26 on the 19th, 05:45–08:27 on the 20th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must hold through the first three muhūrtas after sunrise. It covers 0 of 161 minutes on the 19th and 95 of 161 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 3986 s" }, { "step": "ruling", "text": "Vyāsa Pūjā, Abu Dhabi, 1997: Saturday 19 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "vyasa-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "udaya-3", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-19", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Vyāsa Pūjā 1997 falls on Saturday 19 July. Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vyasa-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/guru-purnima", "festival": "guru-purnima", "name": "Guru Pūrṇimā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 6548, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-07-19", "window": { "start": { "local": "1997-07-19T12:04:33+04:00", "utc": "1997-07-19T08:04:33Z", "ms": 869299473003.146 }, "end": { "local": "1997-07-19T12:52:33+04:00", "utc": "1997-07-19T08:52:33Z", "ms": 869302353003.146 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-07-20", "window": { "start": { "local": "1997-07-20T12:04:36+04:00", "utc": "1997-07-20T08:04:36Z", "ms": 869385876391.0637 }, "end": { "local": "1997-07-20T12:52:36+04:00", "utc": "1997-07-20T08:52:36Z", "ms": 869388756391.0637 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul.", "fact": "1997-07-19T06:15:25Z → 1997-07-20T03:20:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:05–12:53 on the 19th, 12:05–12:53 on the 20th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 48 of 48 minutes on the 19th and 0 of 48 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 6548 s" }, { "step": "ruling", "text": "Guru Pūrṇimā, Abu Dhabi, 1997: Saturday 19 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "guru-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Guru Pūrṇimā 1997 falls on Saturday 19 July. Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/guru-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/kokila-vrata", "festival": "kokila-vrata", "name": "Kokilā Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22516, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 } }, "kaala": "sayahna", "days": [ { "local_date": "1997-07-19", "window": { "start": { "local": "1997-07-19T16:30:41+04:00", "utc": "1997-07-19T12:30:41Z", "ms": 869315441179.1447 }, "end": { "local": "1997-07-19T19:12:07+04:00", "utc": "1997-07-19T15:12:07Z", "ms": 869325126629.8103 } }, "covered_min": 161, "window_min": 161, "qualifies": true }, { "local_date": "1997-07-20", "window": { "start": { "local": "1997-07-20T16:30:30+04:00", "utc": "1997-07-20T12:30:30Z", "ms": 869401830183.2595 }, "end": { "local": "1997-07-20T19:11:46+04:00", "utc": "1997-07-20T15:11:46Z", "ms": 869411506044.7234 } }, "covered_min": 0, "window_min": 161, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul.", "fact": "1997-07-19T06:15:25Z → 1997-07-20T03:20:17Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:31–19:12 on the 19th, 16:31–19:12 on the 20th.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during sāyāhna. It covers 161 of 161 minutes on the 19th and 0 of 161 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 22516 s" }, { "step": "ruling", "text": "Kokilā Vrata, Abu Dhabi, 1997: Saturday 19 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kokila-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "sayahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kokilā Vrata 1997 falls on Saturday 19 July. Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/kokila-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shiva-shayanotsava", "festival": "shiva-shayanotsava", "name": "Śiva Śayanotsava", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32202, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 }, "month": { "amanta": 3, "purnimanta": 3, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Āṣāḍha" } }, "span": { "of": "tithi", "start": { "local": "1997-07-19T10:15:25+04:00", "utc": "1997-07-19T06:15:25Z", "ms": 869292924796.668 }, "end": { "local": "1997-07-20T07:20:17+04:00", "utc": "1997-07-20T03:20:17Z", "ms": 869368816870.9412 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-07-19", "window": { "start": { "local": "1997-07-19T19:12:07+04:00", "utc": "1997-07-19T15:12:07Z", "ms": 869325126629.8103 }, "end": { "local": "1997-07-19T20:36:33+04:00", "utc": "1997-07-19T16:36:33Z", "ms": 869330193310.8228 } }, "covered_min": 84, "window_min": 84, "qualifies": true }, { "local_date": "1997-07-20", "window": { "start": { "local": "1997-07-20T19:11:46+04:00", "utc": "1997-07-20T15:11:46Z", "ms": 869411506044.7234 }, "end": { "local": "1997-07-20T20:36:19+04:00", "utc": "1997-07-20T16:36:19Z", "ms": 869416579134.2811 } }, "covered_min": 0, "window_min": 85, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul.", "fact": "1997-07-19T06:15:25Z → 1997-07-20T03:20:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:12–20:37 on the 19th, 19:12–20:36 on the 20th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 84 of 84 minutes on the 19th and 0 of 85 on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32202 s" }, { "step": "ruling", "text": "Śiva Śayanotsava, Abu Dhabi, 1997: Saturday 19 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shiva-shayanotsava", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śiva Śayanotsava 1997 falls on Saturday 19 July. Pūrṇimā runs from 10:15 on Sat 19 Jul to 07:20 on Sun 20 Jul and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shiva-shayanotsava", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ashunya-shayana-vrata-ashadha", "festival": "ashunya-shayana-vrata-ashadha", "name": "Aśūnya Śayana Vrata (Āṣāḍha)", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16483, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1997-07-21T04:09:07+04:00", "utc": "1997-07-21T00:09:07Z", "ms": 869443747199.7499 }, "end": { "local": "1997-07-22T00:51:27+04:00", "utc": "1997-07-21T20:51:27Z", "ms": 869518287063.0765 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-07-21T04:09:07+04:00", "utc": "1997-07-21T00:09:07Z", "ms": 869443747199.7499 }, "end": { "local": "1997-07-22T00:51:27+04:00", "utc": "1997-07-21T20:51:27Z", "ms": 869518287063.0765 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-07-20", "window": { "start": { "local": "1997-07-20T19:25:02+04:00", "utc": "1997-07-20T15:25:02Z", "ms": 869412301919.7316 }, "end": { "local": "1997-07-20T19:25:02+04:00", "utc": "1997-07-20T15:25:02Z", "ms": 869412301919.7316 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-07-21", "window": { "start": { "local": "1997-07-21T20:16:44+04:00", "utc": "1997-07-21T16:16:44Z", "ms": 869501804438.1017 }, "end": { "local": "1997-07-21T20:16:44+04:00", "utc": "1997-07-21T16:16:44Z", "ms": 869501804438.1017 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 04:09 on Mon 21 Jul to 00:51 on Tue 22 Jul.", "fact": "1997-07-21T00:09:07Z → 1997-07-21T20:51:27Z" }, { "step": "kaala", "text": "Moonrise is at 19:25 on the 20th and 20:17 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16483 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata (Āṣāḍha), Abu Dhabi, 1997: Monday 21 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata-ashadha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 102", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunya sayana vrata (candrodaya vyapini; purvahna vyapini and purvaviddha in Bengal)." } ], "not_evaluated": "In Bengal the row reads pūrvāhṇa and pūrvaviddha; that reading is not applied.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-21", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Aśūnya Śayana Vrata (Āṣāḍha) 1997 falls on Monday 21 July. Dvitīyā runs from 04:09 on Mon 21 Jul to 00:51 on Tue 22 Jul and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ashunya-shayana-vrata-ashadha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-07-22", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-22", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 1850, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-07-22T21:36:11+04:00", "utc": "1997-07-22T17:36:11Z", "ms": 869592970784.6141 }, "end": { "local": "1997-07-23T18:31:14+04:00", "utc": "1997-07-23T14:31:14Z", "ms": 869668273846.356 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-07-22T21:36:11+04:00", "utc": "1997-07-22T17:36:11Z", "ms": 869592970784.6141 }, "end": { "local": "1997-07-23T18:31:14+04:00", "utc": "1997-07-23T14:31:14Z", "ms": 869668273846.356 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-07-22", "window": { "start": { "local": "1997-07-22T21:05:21+04:00", "utc": "1997-07-22T17:05:21Z", "ms": 869591120545.5511 }, "end": { "local": "1997-07-22T21:05:21+04:00", "utc": "1997-07-22T17:05:21Z", "ms": 869591120545.5511 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-07-23", "window": { "start": { "local": "1997-07-23T21:51:22+04:00", "utc": "1997-07-23T17:51:22Z", "ms": 869680281829.9011 }, "end": { "local": "1997-07-23T21:51:22+04:00", "utc": "1997-07-23T17:51:22Z", "ms": 869680281829.9011 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 21:36 on Tue 22 Jul to 18:31 on Wed 23 Jul.", "fact": "1997-07-22T17:36:11Z → 1997-07-23T14:31:14Z" }, { "step": "kaala", "text": "Moonrise is at 21:05 on the 22nd and 21:51 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Neither moonrise qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 1850 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Tuesday 22 July.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-22", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-22", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Tuesday 22 July. Caturthī runs from 21:36 on Tue 22 Jul to 18:31 on Wed 23 Jul, and is current at moonrise on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-07-22", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-07-30", "festival": "ekadashi", "name": "Kāmikā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8029, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-07-29T08:09:09+04:00", "utc": "1997-07-29T04:09:09Z", "ms": 870149349030.3843 }, "end": { "local": "1997-07-30T08:03:53+04:00", "utc": "1997-07-30T04:03:53Z", "ms": 870235433054.4193 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-07-29T08:09:09+04:00", "utc": "1997-07-29T04:09:09Z", "ms": 870149349030.3843 }, "end": { "local": "1997-07-30T08:03:53+04:00", "utc": "1997-07-30T04:03:53Z", "ms": 870235433054.4193 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-07-29", "window": { "start": { "local": "1997-07-29T05:49:36+04:00", "utc": "1997-07-29T01:49:36Z", "ms": 870140976283.8102 }, "end": { "local": "1997-07-29T05:49:36+04:00", "utc": "1997-07-29T01:49:36Z", "ms": 870140976283.8102 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-07-30", "window": { "start": { "local": "1997-07-30T05:50:04+04:00", "utc": "1997-07-30T01:50:04Z", "ms": 870227404055.1471 }, "end": { "local": "1997-07-30T05:50:04+04:00", "utc": "1997-07-30T01:50:04Z", "ms": 870227404055.1471 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:09 on Tue 29 Jul to 08:04 on Wed 30 Jul.", "fact": "1997-07-29T04:09:09Z → 1997-07-30T04:03:53Z" }, { "step": "kaala", "text": "Sunrise is at 05:50 on the 29th and 05:50 on the 30th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 29th and is on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 8029 s" }, { "step": "ruling", "text": "Kāmikā Ekādaśī, Abu Dhabi, 1997: Wednesday 30 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-30", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kāmikā Ekādaśī 1997 falls on Wednesday 30 July. Ekādaśī runs from 08:09 on Tue 29 Jul to 08:04 on Wed 30 Jul and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-07-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-07-31", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-07-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 35389, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-07-31T08:26:29+04:00", "utc": "1997-07-31T04:26:29Z", "ms": 870323189305.2551 }, "end": { "local": "1997-08-01T09:16:17+04:00", "utc": "1997-08-01T05:16:17Z", "ms": 870412577359.5062 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-07-31T08:26:29+04:00", "utc": "1997-07-31T04:26:29Z", "ms": 870323189305.2551 }, "end": { "local": "1997-08-01T09:16:17+04:00", "utc": "1997-08-01T05:16:17Z", "ms": 870412577359.5062 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-07-31", "window": { "start": { "local": "1997-07-31T19:06:41+04:00", "utc": "1997-07-31T15:06:41Z", "ms": 870361601194.2852 }, "end": { "local": "1997-07-31T20:32:36+04:00", "utc": "1997-07-31T16:32:36Z", "ms": 870366755621.4952 } }, "covered_min": 86, "window_min": 86, "qualifies": true }, { "local_date": "1997-08-01", "window": { "start": { "local": "1997-08-01T19:06:07+04:00", "utc": "1997-08-01T15:06:07Z", "ms": 870447966635.9343 }, "end": { "local": "1997-08-01T20:32:09+04:00", "utc": "1997-08-01T16:32:09Z", "ms": 870453129342.2878 } }, "covered_min": 0, "window_min": 86, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 08:26 on Thu 31 Jul to 09:16 on Fri 1 Aug.", "fact": "1997-07-31T04:26:29Z → 1997-08-01T05:16:17Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 19:07–20:33 on the 31st, 19:06–20:32 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 86 of 86 minutes on the 31st and 0 of 86 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 35389 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Thursday 31 July.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-07-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-07-31", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Thursday 31 July. Trayodaśī runs from 08:26 on Thu 31 Jul to 09:16 on Fri 1 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-07-31", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-08-01", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30207, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-08-01T09:16:17+04:00", "utc": "1997-08-01T05:16:17Z", "ms": 870412577359.5062 }, "end": { "local": "1997-08-02T10:32:31+04:00", "utc": "1997-08-02T06:32:31Z", "ms": 870503550670.384 }, "month": { "amanta": 3, "purnimanta": 4, "adhika": false, "amanta_name": "Āṣāḍha", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-01T09:16:17+04:00", "utc": "1997-08-01T05:16:17Z", "ms": 870412577359.5062 }, "end": { "local": "1997-08-02T10:32:31+04:00", "utc": "1997-08-02T06:32:31Z", "ms": 870503550670.384 } }, "kaala": "nishita", "days": [ { "local_date": "1997-07-31", "window": { "start": { "local": "1997-08-01T00:04:50+04:00", "utc": "1997-07-31T20:04:50Z", "ms": 870379490296.323 }, "end": { "local": "1997-08-01T00:52:50+04:00", "utc": "1997-07-31T20:52:50Z", "ms": 870382370296.323 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-01", "window": { "start": { "local": "1997-08-02T00:04:47+04:00", "utc": "1997-08-01T20:04:47Z", "ms": 870465886784.76 }, "end": { "local": "1997-08-02T00:52:47+04:00", "utc": "1997-08-01T20:52:47Z", "ms": 870468766784.76 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 09:16 on Fri 1 Aug to 10:33 on Sat 2 Aug.", "fact": "1997-08-01T05:16:17Z → 1997-08-02T06:32:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:05–00:53 on the 31st, 00:05–00:53 on the 1st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 30207 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Friday 1 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-01", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Friday 1 August. Caturdaśī runs from 09:16 on Fri 1 Aug to 10:33 on Sat 2 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-08-01", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/madhusrava-tritiya", "festival": "madhusrava-tritiya", "name": "Madhusravā Tṛtīyā", "everyday": "Hariyali Teej", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13731, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-08-05T16:41:04+04:00", "utc": "1997-08-05T12:41:04Z", "ms": 870784863886.8606 }, "end": { "local": "1997-08-06T19:16:11+04:00", "utc": "1997-08-06T15:16:11Z", "ms": 870880571084.0905 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-05T16:41:04+04:00", "utc": "1997-08-05T12:41:04Z", "ms": 870784863886.8606 }, "end": { "local": "1997-08-06T19:16:11+04:00", "utc": "1997-08-06T15:16:11Z", "ms": 870880571084.0905 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-05", "window": { "start": { "local": "1997-08-05T12:04:13+04:00", "utc": "1997-08-05T08:04:13Z", "ms": 870768253188.7897 }, "end": { "local": "1997-08-05T12:52:13+04:00", "utc": "1997-08-05T08:52:13Z", "ms": 870771133188.7897 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-06", "window": { "start": { "local": "1997-08-06T12:04:07+04:00", "utc": "1997-08-06T08:04:07Z", "ms": 870854646730.5479 }, "end": { "local": "1997-08-06T12:52:07+04:00", "utc": "1997-08-06T08:52:07Z", "ms": 870857526730.5479 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 16:41 on Tue 5 Aug to 19:16 on Wed 6 Aug.", "fact": "1997-08-05T12:41:04Z → 1997-08-06T15:16:11Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 5th, 12:04–12:52 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 13731 s" }, { "step": "ruling", "text": "Madhusravā Tṛtīyā, Abu Dhabi, 1997: Wednesday 6 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "madhusrava-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Madhusrava (Gujerat) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Madhusravā Tṛtīyā (Hariyali Teej) 1997 falls on Wednesday 6 August. Tṛtīyā runs from 16:41 on Tue 5 Aug to 19:16 on Wed 6 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/madhusrava-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-08-07", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 23044, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-08-06T19:16:11+04:00", "utc": "1997-08-06T15:16:11Z", "ms": 870880571084.0905 }, "end": { "local": "1997-08-07T21:54:21+04:00", "utc": "1997-08-07T17:54:21Z", "ms": 870976460552.4465 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-06T19:16:11+04:00", "utc": "1997-08-06T15:16:11Z", "ms": 870880571084.0905 }, "end": { "local": "1997-08-07T21:54:21+04:00", "utc": "1997-08-07T17:54:21Z", "ms": 870976460552.4465 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-06", "window": { "start": { "local": "1997-08-06T12:04:07+04:00", "utc": "1997-08-06T08:04:07Z", "ms": 870854646730.5479 }, "end": { "local": "1997-08-06T12:52:07+04:00", "utc": "1997-08-06T08:52:07Z", "ms": 870857526730.5479 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-07", "window": { "start": { "local": "1997-08-07T12:04:00+04:00", "utc": "1997-08-07T08:04:00Z", "ms": 870941039672.3518 }, "end": { "local": "1997-08-07T12:52:00+04:00", "utc": "1997-08-07T08:52:00Z", "ms": 870943919672.3518 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 19:16 on Wed 6 Aug to 21:54 on Thu 7 Aug.", "fact": "1997-08-06T15:16:11Z → 1997-08-07T17:54:21Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 6th, 12:04–12:52 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 23044 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Thursday 7 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-07", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Thursday 7 August. Caturthī runs from 19:16 on Wed 6 Aug to 21:54 on Thu 7 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-08-07", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/naga-panchami", "festival": "naga-panchami", "name": "Nāga Pañcamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32541, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-08-07T21:54:21+04:00", "utc": "1997-08-07T17:54:21Z", "ms": 870976460552.4465 }, "end": { "local": "1997-08-09T00:24:10+04:00", "utc": "1997-08-08T20:24:10Z", "ms": 871071850426.0323 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-07T21:54:21+04:00", "utc": "1997-08-07T17:54:21Z", "ms": 870976460552.4465 }, "end": { "local": "1997-08-09T00:24:10+04:00", "utc": "1997-08-08T20:24:10Z", "ms": 871071850426.0323 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-07", "window": { "start": { "local": "1997-08-07T12:04:00+04:00", "utc": "1997-08-07T08:04:00Z", "ms": 870941039672.3518 }, "end": { "local": "1997-08-07T12:52:00+04:00", "utc": "1997-08-07T08:52:00Z", "ms": 870943919672.3518 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-08", "window": { "start": { "local": "1997-08-08T12:03:52+04:00", "utc": "1997-08-08T08:03:52Z", "ms": 871027432016.241 }, "end": { "local": "1997-08-08T12:51:52+04:00", "utc": "1997-08-08T08:51:52Z", "ms": 871030312016.241 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 21:54 on Thu 7 Aug to 00:24 on Sat 9 Aug.", "fact": "1997-08-07T17:54:21Z → 1997-08-08T20:24:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:04–12:52 on the 7th, 12:04–12:52 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 32541 s" }, { "step": "ruling", "text": "Nāga Pañcamī, Abu Dhabi, 1997: Friday 8 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Nāga Pañcamī 1997 falls on Friday 8 August. Pañcamī runs from 21:54 on Thu 7 Aug to 00:24 on Sat 9 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/naga-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-08-14", "festival": "ekadashi", "name": "Putradā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5488, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-08-14T04:25:17+04:00", "utc": "1997-08-14T00:25:17Z", "ms": 871518316544.6548 }, "end": { "local": "1997-08-15T02:52:51+04:00", "utc": "1997-08-14T22:52:51Z", "ms": 871599171154.995 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-14T04:25:17+04:00", "utc": "1997-08-14T00:25:17Z", "ms": 871518316544.6548 }, "end": { "local": "1997-08-15T02:52:51+04:00", "utc": "1997-08-14T22:52:51Z", "ms": 871599171154.995 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-08-14", "window": { "start": { "local": "1997-08-14T05:56:45+04:00", "utc": "1997-08-14T01:56:45Z", "ms": 871523804598.4187 }, "end": { "local": "1997-08-14T05:56:45+04:00", "utc": "1997-08-14T01:56:45Z", "ms": 871523804598.4187 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-08-15", "window": { "start": { "local": "1997-08-15T05:57:10+04:00", "utc": "1997-08-15T01:57:10Z", "ms": 871610229714.2616 }, "end": { "local": "1997-08-15T05:57:10+04:00", "utc": "1997-08-15T01:57:10Z", "ms": 871610229714.2616 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 04:25 on Thu 14 Aug to 02:53 on Fri 15 Aug.", "fact": "1997-08-14T00:25:17Z → 1997-08-14T22:52:51Z" }, { "step": "kaala", "text": "Sunrise is at 05:57 on the 14th and 05:57 on the 15th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 14th and is not on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5488 s" }, { "step": "ruling", "text": "Putradā Ekādaśī, Abu Dhabi, 1997: Thursday 14 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-14", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Putradā Ekādaśī 1997 falls on Thursday 14 August. Ekādaśī runs from 04:25 on Thu 14 Aug to 02:53 on Fri 15 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-08-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/damodara-dvadashi", "festival": "damodara-dvadashi", "name": "Dāmodara Dvādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-15", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32991, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-08-15T02:52:51+04:00", "utc": "1997-08-14T22:52:51Z", "ms": 871599171154.995 }, "end": { "local": "1997-08-16T00:37:31+04:00", "utc": "1997-08-15T20:37:31Z", "ms": 871677450644.2272 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-15T02:52:51+04:00", "utc": "1997-08-14T22:52:51Z", "ms": 871599171154.995 }, "end": { "local": "1997-08-16T00:37:31+04:00", "utc": "1997-08-15T20:37:31Z", "ms": 871677450644.2272 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-15", "window": { "start": { "local": "1997-08-15T12:02:42+04:00", "utc": "1997-08-15T08:02:42Z", "ms": 871632162081.1306 }, "end": { "local": "1997-08-15T12:50:42+04:00", "utc": "1997-08-15T08:50:42Z", "ms": 871635042081.1306 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-08-16", "window": { "start": { "local": "1997-08-16T12:02:30+04:00", "utc": "1997-08-16T08:02:30Z", "ms": 871718549848.8539 }, "end": { "local": "1997-08-16T12:50:30+04:00", "utc": "1997-08-16T08:50:30Z", "ms": 871721429848.8539 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 02:53 on Fri 15 Aug to 00:38 on Sat 16 Aug.", "fact": "1997-08-14T22:52:51Z → 1997-08-15T20:37:31Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:03–12:51 on the 15th, 12:02–12:50 on the 16th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 48 of 48 minutes on the 15th and 0 of 48 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 32991 s" }, { "step": "ruling", "text": "Dāmodara Dvādaśī, Abu Dhabi, 1997: Friday 15 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "damodara-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Buddha dvadasi, Damodara dvadasi (purvaviddha), Visnu-pavitraropana." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-15", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-15", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Dāmodara Dvādaśī 1997 falls on Friday 15 August. Dvādaśī runs from 02:53 on Fri 15 Aug to 00:38 on Sat 16 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/damodara-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-08-16", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-16", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 4979, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-08-16T00:37:31+04:00", "utc": "1997-08-15T20:37:31Z", "ms": 871677450644.2272 }, "end": { "local": "1997-08-16T21:46:45+04:00", "utc": "1997-08-16T17:46:45Z", "ms": 871753604995.9172 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-16T00:37:31+04:00", "utc": "1997-08-15T20:37:31Z", "ms": 871677450644.2272 }, "end": { "local": "1997-08-16T21:46:45+04:00", "utc": "1997-08-16T17:46:45Z", "ms": 871753604995.9172 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-08-15", "window": { "start": { "local": "1997-08-15T18:56:14+04:00", "utc": "1997-08-15T14:56:14Z", "ms": 871656974447.9995 }, "end": { "local": "1997-08-15T20:24:25+04:00", "utc": "1997-08-15T16:24:25Z", "ms": 871662265135.0355 } }, "covered_min": 0, "window_min": 88, "qualifies": false }, { "local_date": "1997-08-16", "window": { "start": { "local": "1997-08-16T18:55:25+04:00", "utc": "1997-08-16T14:55:25Z", "ms": 871743325096.9377 }, "end": { "local": "1997-08-16T20:23:46+04:00", "utc": "1997-08-16T16:23:46Z", "ms": 871748625652.0065 } }, "covered_min": 88, "window_min": 88, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 00:38 on Sat 16 Aug to 21:47 on Sat 16 Aug.", "fact": "1997-08-15T20:37:31Z → 1997-08-16T17:46:45Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:56–20:24 on the 15th, 18:55–20:24 on the 16th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 88 minutes on the 15th and 88 of 88 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 4979 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Saturday 16 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-16", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-16", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Saturday 16 August. Trayodaśī runs from 00:38 on Sat 16 Aug to 21:47 on Sat 16 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-08-16", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/raksha-bandhana", "festival": "raksha-bandhana", "name": "Rakṣā Bandhana", "everyday": "Rakhi", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-18", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 4466, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-08-17T18:29:30+04:00", "utc": "1997-08-17T14:29:30Z", "ms": 871828170218.836 }, "end": { "local": "1997-08-18T14:55:26+04:00", "utc": "1997-08-18T10:55:26Z", "ms": 871901726332.8843 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "second-half", "start": { "local": "1997-08-18T04:43:57+04:00", "utc": "1997-08-18T00:43:57Z", "ms": 871865037373.7393 }, "end": { "local": "1997-08-18T14:55:26+04:00", "utc": "1997-08-18T10:55:26Z", "ms": 871901726332.8843 } }, "kaala": "day", "days": [ { "local_date": "1997-08-17", "window": { "start": { "local": "1997-08-17T05:57:59+04:00", "utc": "1997-08-17T01:57:59Z", "ms": 871783079259.9532 }, "end": { "local": "1997-08-18T05:58:24+04:00", "utc": "1997-08-18T01:58:24Z", "ms": 871869503695.874 } }, "covered_min": 74, "window_min": 1440, "qualifies": true }, { "local_date": "1997-08-18", "window": { "start": { "local": "1997-08-18T05:58:24+04:00", "utc": "1997-08-18T01:58:24Z", "ms": 871869503695.874 }, "end": { "local": "1997-08-19T05:58:48+04:00", "utc": "1997-08-19T01:58:48Z", "ms": 871955927914.4415 } }, "covered_min": 537, "window_min": 1440, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:30 on Sun 17 Aug to 14:55 on Mon 18 Aug. Its second half begins at 04:44 on Mon 18 Aug.", "fact": "1997-08-17T14:29:30Z → 1997-08-18T10:55:26Z · second half from 1997-08-18T00:43:57Z" }, { "step": "kaala", "text": "The day runs from sunrise to the next sunrise: from 05:58 on the 17th, and from 05:58 on the 18th.", "fact": "day: sunrise-to-sunrise · sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "The second half of Pūrṇimā must be present during the day. It covers 74 of 1440 minutes on the 17th and 537 of 1440 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both days qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 4466 s" }, { "step": "ruling", "text": "Rakṣā Bandhana, Abu Dhabi, 1997: Monday 18 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "raksha-bandhana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "day", "priority": "unstated", "when_absent": "unstated", "half": "second" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-18", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-18", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Rakṣā Bandhana (Rakhi) 1997 falls on Monday 18 August. The second half of Pūrṇimā runs from 04:44 on Mon 18 Aug to 14:55 on Mon 18 Aug and falls on two days: 537 minutes of it on the 18th, 74 on the 17th; the rule does not say which to take, and the day that holds more of it is ruled: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/raksha-bandhana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rishi-tarpana", "festival": "rishi-tarpana", "name": "Ṛṣi Tarpaṇa", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-18", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7523, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-08-17T18:29:30+04:00", "utc": "1997-08-17T14:29:30Z", "ms": 871828170218.836 }, "end": { "local": "1997-08-18T14:55:26+04:00", "utc": "1997-08-18T10:55:26Z", "ms": 871901726332.8843 }, "month": { "amanta": 4, "purnimanta": 4, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Śrāvaṇa" } }, "span": { "of": "tithi", "start": { "local": "1997-08-17T18:29:30+04:00", "utc": "1997-08-17T14:29:30Z", "ms": 871828170218.836 }, "end": { "local": "1997-08-18T14:55:26+04:00", "utc": "1997-08-18T10:55:26Z", "ms": 871901726332.8843 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-17", "window": { "start": { "local": "1997-08-17T12:02:17+04:00", "utc": "1997-08-17T08:02:17Z", "ms": 871804937089.9186 }, "end": { "local": "1997-08-17T12:50:17+04:00", "utc": "1997-08-17T08:50:17Z", "ms": 871807817089.9186 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-18", "window": { "start": { "local": "1997-08-18T12:02:04+04:00", "utc": "1997-08-18T08:02:04Z", "ms": 871891323819.346 }, "end": { "local": "1997-08-18T12:50:04+04:00", "utc": "1997-08-18T08:50:04Z", "ms": 871894203819.346 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 18:30 on Sun 17 Aug to 14:55 on Mon 18 Aug.", "fact": "1997-08-17T14:29:30Z → 1997-08-18T10:55:26Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 17th, 12:02–12:50 on the 18th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 17th and 48 of 48 on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 7523 s" }, { "step": "ruling", "text": "Ṛṣi Tarpaṇa, Abu Dhabi, 1997: Monday 18 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-tarpana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rakhi purnima, Naroli purnima (Cocoanut day), Raksa Bandhana (in the second half of purnima), Rsi tarpana (madhyahna vyapini), Hayagriva utpatti, Jhulanayatra samapana" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-18", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-18", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ṛṣi Tarpaṇa 1997 falls on Monday 18 August. Pūrṇimā runs from 18:30 on Sun 17 Aug to 14:55 on Mon 18 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rishi-tarpana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ashunya-shayana-vrata", "festival": "ashunya-shayana-vrata", "name": "Aśūnya Śayana Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 30471, "anga": { "type": "tithi", "index": 16, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1997-08-19T11:14:26+04:00", "utc": "1997-08-19T07:14:26Z", "ms": 871974865668.4865 }, "end": { "local": "1997-08-20T07:36:09+04:00", "utc": "1997-08-20T03:36:09Z", "ms": 872048169192.5796 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-19T11:14:26+04:00", "utc": "1997-08-19T07:14:26Z", "ms": 871974865668.4865 }, "end": { "local": "1997-08-20T07:36:09+04:00", "utc": "1997-08-20T03:36:09Z", "ms": 872048169192.5796 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-08-19", "window": { "start": { "local": "1997-08-19T19:42:17+04:00", "utc": "1997-08-19T15:42:17Z", "ms": 872005336771.3403 }, "end": { "local": "1997-08-19T19:42:17+04:00", "utc": "1997-08-19T15:42:17Z", "ms": 872005336771.3403 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-08-20", "window": { "start": { "local": "1997-08-20T20:28:55+04:00", "utc": "1997-08-20T16:28:55Z", "ms": 872094534732.6294 }, "end": { "local": "1997-08-20T20:28:55+04:00", "utc": "1997-08-20T16:28:55Z", "ms": 872094534732.6294 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 11:14 on Tue 19 Aug to 07:36 on Wed 20 Aug.", "fact": "1997-08-19T07:14:26Z → 1997-08-20T03:36:09Z" }, { "step": "kaala", "text": "Moonrise is at 19:42 on the 19th and 20:29 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Dvitīyā must be current at moonrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 30471 s" }, { "step": "ruling", "text": "Aśūnya Śayana Vrata, Abu Dhabi, 1997: Tuesday 19 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ashunya-shayana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 2 Asunyasayana vrata (Dvitiya current at moonrise; if occurs on two successive days, it is to be observed on the second day)." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Aśūnya Śayana Vrata 1997 falls on Tuesday 19 August. Dvitīyā runs from 11:14 on Tue 19 Aug to 07:36 on Wed 20 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ashunya-shayana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/kajjali-tritiya", "festival": "kajjali-tritiya", "name": "Kajjalī Tṛtīyā", "everyday": "Kajari Teej", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-20", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15927, "anga": { "type": "tithi", "index": 17, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-08-20T07:36:09+04:00", "utc": "1997-08-20T03:36:09Z", "ms": 872048169192.5796 }, "end": { "local": "1997-08-21T04:09:47+04:00", "utc": "1997-08-21T00:09:47Z", "ms": 872122187451.7365 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-20T07:36:09+04:00", "utc": "1997-08-20T03:36:09Z", "ms": 872048169192.5796 }, "end": { "local": "1997-08-21T04:09:47+04:00", "utc": "1997-08-21T00:09:47Z", "ms": 872122187451.7365 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-20", "window": { "start": { "local": "1997-08-20T12:01:36+04:00", "utc": "1997-08-20T08:01:36Z", "ms": 872064095809.1285 }, "end": { "local": "1997-08-20T12:49:36+04:00", "utc": "1997-08-20T08:49:36Z", "ms": 872066975809.1285 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-08-21", "window": { "start": { "local": "1997-08-21T12:01:21+04:00", "utc": "1997-08-21T08:01:21Z", "ms": 872150481103.8433 }, "end": { "local": "1997-08-21T12:49:21+04:00", "utc": "1997-08-21T08:49:21Z", "ms": 872153361103.8433 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 07:36 on Wed 20 Aug to 04:10 on Thu 21 Aug.", "fact": "1997-08-20T03:36:09Z → 1997-08-21T00:09:47Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:02–12:50 on the 20th, 12:01–12:49 on the 21st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 20th and 0 of 48 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15927 s" }, { "step": "ruling", "text": "Kajjalī Tṛtīyā, Abu Dhabi, 1997: Wednesday 20 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kajjali-tritiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 3 Kajjali trtiya, (paraviddha), Angaveta trtiya (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-20", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-20", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kajjalī Tṛtīyā (Kajari Teej) 1997 falls on Wednesday 20 August. Tṛtīyā runs from 07:36 on Wed 20 Aug to 04:10 on Thu 21 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/kajjali-tritiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/bahula-chaturthi", "festival": "bahula-chaturthi", "name": "Bahulā Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22356, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-08-21T04:09:47+04:00", "utc": "1997-08-21T00:09:47Z", "ms": 872122187451.7365 }, "end": { "local": "1997-08-22T01:03:43+04:00", "utc": "1997-08-21T21:03:43Z", "ms": 872197422961.5474 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-21T04:09:47+04:00", "utc": "1997-08-21T00:09:47Z", "ms": 872122187451.7365 }, "end": { "local": "1997-08-22T01:03:43+04:00", "utc": "1997-08-21T21:03:43Z", "ms": 872197422961.5474 } }, "kaala": "sayahna", "days": [ { "local_date": "1997-08-20", "window": { "start": { "local": "1997-08-20T16:17:26+04:00", "utc": "1997-08-20T12:17:26Z", "ms": 872079446140.8605 }, "end": { "local": "1997-08-20T18:52:00+04:00", "utc": "1997-08-20T14:52:00Z", "ms": 872088719695.3484 } }, "covered_min": 0, "window_min": 155, "qualifies": false }, { "local_date": "1997-08-21", "window": { "start": { "local": "1997-08-21T16:16:48+04:00", "utc": "1997-08-21T12:16:48Z", "ms": 872165808328.6624 }, "end": { "local": "1997-08-21T18:51:06+04:00", "utc": "1997-08-21T14:51:06Z", "ms": 872175066478.5419 } }, "covered_min": 154, "window_min": 154, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:10 on Thu 21 Aug to 01:04 on Fri 22 Aug.", "fact": "1997-08-21T00:09:47Z → 1997-08-21T21:03:43Z" }, { "step": "kaala", "text": "Sāyāhna is last 3 of 15 day muhūrtas: 16:17–18:52 on the 20th, 16:17–18:51 on the 21st.", "fact": "sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during sāyāhna. It covers 0 of 155 minutes on the 20th and 154 of 154 on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one late afternoon qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 22356 s" }, { "step": "ruling", "text": "Bahulā Caturthī, Abu Dhabi, 1997: Thursday 21 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bahula-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Bahula caturthi (Madhyadesa) (Sayahnavyapini: if occurs on two successive days, it is to be observed on the 1st day)." } ], "kaala": "sayahna", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-21", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Bahulā Caturthī 1997 falls on Thursday 21 August. Caturthī runs from 04:10 on Thu 21 Aug to 01:04 on Fri 22 Aug and covers all of sāyāhna that late afternoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/bahula-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-08-21", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13759, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-08-21T04:09:47+04:00", "utc": "1997-08-21T00:09:47Z", "ms": 872122187451.7365 }, "end": { "local": "1997-08-22T01:03:43+04:00", "utc": "1997-08-21T21:03:43Z", "ms": 872197422961.5474 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-21T04:09:47+04:00", "utc": "1997-08-21T00:09:47Z", "ms": 872122187451.7365 }, "end": { "local": "1997-08-22T01:03:43+04:00", "utc": "1997-08-21T21:03:43Z", "ms": 872197422961.5474 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-08-20", "window": { "start": { "local": "1997-08-20T20:28:55+04:00", "utc": "1997-08-20T16:28:55Z", "ms": 872094534732.6294 }, "end": { "local": "1997-08-20T20:28:55+04:00", "utc": "1997-08-20T16:28:55Z", "ms": 872094534732.6294 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-08-21", "window": { "start": { "local": "1997-08-21T21:14:24+04:00", "utc": "1997-08-21T17:14:24Z", "ms": 872183663901.2347 }, "end": { "local": "1997-08-21T21:14:24+04:00", "utc": "1997-08-21T17:14:24Z", "ms": 872183663901.2347 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:10 on Thu 21 Aug to 01:04 on Fri 22 Aug.", "fact": "1997-08-21T00:09:47Z → 1997-08-21T21:03:43Z" }, { "step": "kaala", "text": "Moonrise is at 20:29 on the 20th and 21:14 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13759 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Thursday 21 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-21", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Thursday 21 August. Caturthī runs from 04:10 on Thu 21 Aug to 01:04 on Fri 22 Aug and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-08-21", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/hala-shashthi", "festival": "hala-shashthi", "name": "Hala Ṣaṣṭhī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27075, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-08-22T22:25:12+04:00", "utc": "1997-08-22T18:25:12Z", "ms": 872274311962.8076 }, "end": { "local": "1997-08-23T20:20:05+04:00", "utc": "1997-08-23T16:20:05Z", "ms": 872353205169.5194 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-22T22:25:12+04:00", "utc": "1997-08-22T18:25:12Z", "ms": 872274311962.8076 }, "end": { "local": "1997-08-23T20:20:05+04:00", "utc": "1997-08-23T16:20:05Z", "ms": 872353205169.5194 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-22", "window": { "start": { "local": "1997-08-22T12:01:06+04:00", "utc": "1997-08-22T08:01:06Z", "ms": 872236865954.543 }, "end": { "local": "1997-08-22T12:49:06+04:00", "utc": "1997-08-22T08:49:06Z", "ms": 872239745954.543 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-23", "window": { "start": { "local": "1997-08-23T12:00:50+04:00", "utc": "1997-08-23T08:00:50Z", "ms": 872323250377.5381 }, "end": { "local": "1997-08-23T12:48:50+04:00", "utc": "1997-08-23T08:48:50Z", "ms": 872326130377.5381 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 22:25 on Fri 22 Aug to 20:20 on Sat 23 Aug.", "fact": "1997-08-22T18:25:12Z → 1997-08-23T16:20:05Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 22nd, 12:01–12:49 on the 23rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 22nd and 48 of 48 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27075 s" }, { "step": "ruling", "text": "Hala Ṣaṣṭhī, Abu Dhabi, 1997: Saturday 23 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "hala-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Hala sasthi (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-23", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Hala Ṣaṣṭhī 1997 falls on Saturday 23 August. Ṣaṣṭhī runs from 22:25 on Fri 22 Aug to 20:20 on Sat 23 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/hala-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/janmashtami", "festival": "janmashtami", "name": "Janmāṣṭamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18497, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-08-24T18:52:29+04:00", "utc": "1997-08-24T14:52:29Z", "ms": 872434349231.3558 }, "end": { "local": "1997-08-25T18:04:33+04:00", "utc": "1997-08-25T14:04:33Z", "ms": 872517872614.4415 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-24T18:52:29+04:00", "utc": "1997-08-24T14:52:29Z", "ms": 872434349231.3558 }, "end": { "local": "1997-08-25T18:04:33+04:00", "utc": "1997-08-25T14:04:33Z", "ms": 872517872614.4415 } }, "kaala": "nishita", "days": [ { "local_date": "1997-08-24", "window": { "start": { "local": "1997-08-25T00:00:46+04:00", "utc": "1997-08-24T20:00:46Z", "ms": 872452845921.5992 }, "end": { "local": "1997-08-25T00:48:46+04:00", "utc": "1997-08-24T20:48:46Z", "ms": 872455725921.5992 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-08-25", "window": { "start": { "local": "1997-08-26T00:00:29+04:00", "utc": "1997-08-25T20:00:29Z", "ms": 872539229448.8276 }, "end": { "local": "1997-08-26T00:48:29+04:00", "utc": "1997-08-25T20:48:29Z", "ms": 872542109448.8276 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 18:52 on Sun 24 Aug to 18:05 on Mon 25 Aug.", "fact": "1997-08-24T14:52:29Z → 1997-08-25T14:04:33Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:01–00:49 on the 24th, 00:00–00:48 on the 25th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during niśītha. It covers 48 of 48 minutes on the 24th and 0 of 48 on the 25th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 18497 s" }, { "step": "ruling", "text": "Janmāṣṭamī, Abu Dhabi, 1997: Sunday 24 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "janmashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Janmastami (madhyaratra-vyapini), if midnight is covered on two days, or not on any day, it is to be observed on the 2nd day; special when combined with naksatra 'Rohini' at midnight, more so when on Monday or Wednesday. If the combination occurs before midnight and 'Rohini' extends up to midnight, it is to be observed on that day. Gokulastami." } ], "not_evaluated": "The clauses on Rohiṇī nakṣatra, the Vaiṣṇava observance on the day after saptamī, and the Assam and South India reckoning in the solar month belong to other readings and are not applied.", "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-24", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Janmāṣṭamī 1997 falls on Sunday 24 August. Aṣṭamī runs from 18:52 on Sun 24 Aug to 18:05 on Mon 25 Aug and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/janmashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shitala-saptami", "festival": "shitala-saptami", "name": "Śītalā Saptamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-24", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21835, "anga": { "type": "tithi", "index": 21, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-08-23T20:20:05+04:00", "utc": "1997-08-23T16:20:05Z", "ms": 872353205169.5194 }, "end": { "local": "1997-08-24T18:52:29+04:00", "utc": "1997-08-24T14:52:29Z", "ms": 872434349231.3558 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-23T20:20:05+04:00", "utc": "1997-08-23T16:20:05Z", "ms": 872353205169.5194 }, "end": { "local": "1997-08-24T18:52:29+04:00", "utc": "1997-08-24T14:52:29Z", "ms": 872434349231.3558 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-08-23", "window": { "start": { "local": "1997-08-23T12:00:50+04:00", "utc": "1997-08-23T08:00:50Z", "ms": 872323250377.5381 }, "end": { "local": "1997-08-23T12:48:50+04:00", "utc": "1997-08-23T08:48:50Z", "ms": 872326130377.5381 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-08-24", "window": { "start": { "local": "1997-08-24T12:00:34+04:00", "utc": "1997-08-24T08:00:34Z", "ms": 872409634388.27 }, "end": { "local": "1997-08-24T12:48:34+04:00", "utc": "1997-08-24T08:48:34Z", "ms": 872412514388.27 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 20:20 on Sat 23 Aug to 18:52 on Sun 24 Aug.", "fact": "1997-08-23T16:20:05Z → 1997-08-24T14:52:29Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 12:01–12:49 on the 23rd, 12:01–12:49 on the 24th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 23rd and 48 of 48 on the 24th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 21835 s" }, { "step": "ruling", "text": "Śītalā Saptamī, Abu Dhabi, 1997: Sunday 24 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shitala-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 7 Sitala saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-24", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-24", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śītalā Saptamī 1997 falls on Sunday 24 August. Saptamī runs from 20:20 on Sat 23 Aug to 18:52 on Sun 24 Aug and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shitala-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-08-28", "festival": "ekadashi", "name": "Ajā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37948, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-08-27T18:26:02+04:00", "utc": "1997-08-27T14:26:02Z", "ms": 872691962461.9177 }, "end": { "local": "1997-08-28T19:30:12+04:00", "utc": "1997-08-28T15:30:12Z", "ms": 872782212106.62 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-27T18:26:02+04:00", "utc": "1997-08-27T14:26:02Z", "ms": 872691962461.9177 }, "end": { "local": "1997-08-28T19:30:12+04:00", "utc": "1997-08-28T15:30:12Z", "ms": 872782212106.62 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-08-28", "window": { "start": { "local": "1997-08-28T06:02:17+04:00", "utc": "1997-08-28T02:02:17Z", "ms": 872733737260.9182 }, "end": { "local": "1997-08-28T06:02:17+04:00", "utc": "1997-08-28T02:02:17Z", "ms": 872733737260.9182 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-08-29", "window": { "start": { "local": "1997-08-29T06:02:40+04:00", "utc": "1997-08-29T02:02:40Z", "ms": 872820159665.2494 }, "end": { "local": "1997-08-29T06:02:40+04:00", "utc": "1997-08-29T02:02:40Z", "ms": 872820159665.2494 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 18:26 on Wed 27 Aug to 19:30 on Thu 28 Aug.", "fact": "1997-08-27T14:26:02Z → 1997-08-28T15:30:12Z" }, { "step": "kaala", "text": "Sunrise is at 06:02 on the 28th and 06:03 on the 29th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 28th and is not on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 37948 s" }, { "step": "ruling", "text": "Ajā Ekādaśī, Abu Dhabi, 1997: Thursday 28 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-28", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ajā Ekādaśī 1997 falls on Thursday 28 August. Ekādaśī runs from 18:26 on Wed 27 Aug to 19:30 on Thu 28 Aug and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-08-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-08-30", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3002, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-08-29T21:04:15+04:00", "utc": "1997-08-29T17:04:15Z", "ms": 872874255272.4685 }, "end": { "local": "1997-08-30T23:02:57+04:00", "utc": "1997-08-30T19:02:57Z", "ms": 872967777234.6766 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-29T21:04:15+04:00", "utc": "1997-08-29T17:04:15Z", "ms": 872874255272.4685 }, "end": { "local": "1997-08-30T23:02:57+04:00", "utc": "1997-08-30T19:02:57Z", "ms": 872967777234.6766 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-08-29", "window": { "start": { "local": "1997-08-29T18:43:38+04:00", "utc": "1997-08-29T14:43:38Z", "ms": 872865817834.0889 }, "end": { "local": "1997-08-29T20:14:13+04:00", "utc": "1997-08-29T16:14:13Z", "ms": 872871253044.7793 } }, "covered_min": 0, "window_min": 91, "qualifies": false }, { "local_date": "1997-08-30", "window": { "start": { "local": "1997-08-30T18:42:39+04:00", "utc": "1997-08-30T14:42:39Z", "ms": 872952159239.0562 }, "end": { "local": "1997-08-30T20:13:25+04:00", "utc": "1997-08-30T16:13:25Z", "ms": 872957605208.8461 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 21:04 on Fri 29 Aug to 23:03 on Sat 30 Aug.", "fact": "1997-08-29T17:04:15Z → 1997-08-30T19:02:57Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:44–20:14 on the 29th, 18:43–20:13 on the 30th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 91 minutes on the 29th and 91 of 91 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 3002 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Saturday 30 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-30", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Saturday 30 August. Trayodaśī runs from 21:04 on Fri 29 Aug to 23:03 on Sat 30 Aug and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-08-30", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-30", "confidence": "boundary", "boundary_reasons": [ "tie-break-unstated" ], "boundary_margin_s": 2038, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-08-30T23:02:57+04:00", "utc": "1997-08-30T19:02:57Z", "ms": 872967777234.6766 }, "end": { "local": "1997-09-01T01:20:41+04:00", "utc": "1997-08-31T21:20:41Z", "ms": 873062441336.0347 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-30T23:02:57+04:00", "utc": "1997-08-30T19:02:57Z", "ms": 872967777234.6766 }, "end": { "local": "1997-09-01T01:20:41+04:00", "utc": "1997-08-31T21:20:41Z", "ms": 873062441336.0347 } }, "kaala": "nishita", "days": [ { "local_date": "1997-08-30", "window": { "start": { "local": "1997-08-30T23:59:02+04:00", "utc": "1997-08-30T19:59:02Z", "ms": 872971141625.7684 }, "end": { "local": "1997-08-31T00:47:02+04:00", "utc": "1997-08-30T20:47:02Z", "ms": 872974021625.7684 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-08-31", "window": { "start": { "local": "1997-08-31T23:58:43+04:00", "utc": "1997-08-31T19:58:43Z", "ms": 873057523062.0225 }, "end": { "local": "1997-09-01T00:46:43+04:00", "utc": "1997-08-31T20:46:43Z", "ms": 873060403062.0225 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "greater-coverage", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:03 on Sat 30 Aug to 01:21 on Mon 1 Sep.", "fact": "1997-08-30T19:02:57Z → 1997-08-31T21:20:41Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:59–00:47 on the 30th, 23:59–00:47 on the 31st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 30th and 48 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Both nights qualify and the rule marks neither. The one covered longer is ruled, as a boundary.", "fact": "priority: unstated → greater-coverage · margin 2038 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Saturday 30 August.", "fact": "confidence: boundary (tie-break-unstated)" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-30", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-31", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Saturday 30 August. Caturdaśī runs from 23:03 on Sat 30 Aug to 01:21 on Mon 1 Sep and covers all of niśītha that night. It also reaches the next night for 48 minutes; the rule does not say which to take, and the one covered longer is ruled: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-08-30", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/aghora-chaturdashi", "festival": "aghora-chaturdashi", "name": "Aghora Caturdaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-08-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10172, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-08-30T23:02:57+04:00", "utc": "1997-08-30T19:02:57Z", "ms": 872967777234.6766 }, "end": { "local": "1997-09-01T01:20:41+04:00", "utc": "1997-08-31T21:20:41Z", "ms": 873062441336.0347 }, "month": { "amanta": 4, "purnimanta": 5, "adhika": false, "amanta_name": "Śrāvaṇa", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-08-30T23:02:57+04:00", "utc": "1997-08-30T19:02:57Z", "ms": 872967777234.6766 }, "end": { "local": "1997-09-01T01:20:41+04:00", "utc": "1997-08-31T21:20:41Z", "ms": 873062441336.0347 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-08-30", "window": { "start": { "local": "1997-08-30T18:42:39+04:00", "utc": "1997-08-30T14:42:39Z", "ms": 872952159239.0562 }, "end": { "local": "1997-08-30T20:13:25+04:00", "utc": "1997-08-30T16:13:25Z", "ms": 872957605208.8461 } }, "covered_min": 0, "window_min": 91, "qualifies": false }, { "local_date": "1997-08-31", "window": { "start": { "local": "1997-08-31T18:41:40+04:00", "utc": "1997-08-31T14:41:40Z", "ms": 873038500159.2328 }, "end": { "local": "1997-08-31T20:12:37+04:00", "utc": "1997-08-31T16:12:37Z", "ms": 873043956933.31 } }, "covered_min": 91, "window_min": 91, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 23:03 on Sat 30 Aug to 01:21 on Mon 1 Sep.", "fact": "1997-08-30T19:02:57Z → 1997-08-31T21:20:41Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:43–20:13 on the 30th, 18:42–20:13 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during pradoṣa. It covers 0 of 91 minutes on the 30th and 91 of 91 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10172 s" }, { "step": "ruling", "text": "Aghora Caturdaśī, Abu Dhabi, 1997: Sunday 31 August.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "aghora-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Aghora caturdasi (pradosa vyapini)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-08-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-08-31", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Aghora Caturdaśī 1997 falls on Sunday 31 August. Caturdaśī runs from 23:03 on Sat 30 Aug to 01:21 on Mon 1 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/aghora-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rudra-vrata", "festival": "rudra-vrata", "name": "Rudra Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19698, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-09-02T03:51:34+04:00", "utc": "1997-09-01T23:51:34Z", "ms": 873157893971.6753 }, "end": { "local": "1997-09-03T06:29:17+04:00", "utc": "1997-09-03T02:29:17Z", "ms": 873253756920.7886 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-02T03:51:34+04:00", "utc": "1997-09-01T23:51:34Z", "ms": 873157893971.6753 }, "end": { "local": "1997-09-03T06:29:17+04:00", "utc": "1997-09-03T02:29:17Z", "ms": 873253756920.7886 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-02", "window": { "start": { "local": "1997-09-02T11:57:54+04:00", "utc": "1997-09-02T07:57:54Z", "ms": 873187074205.0004 }, "end": { "local": "1997-09-02T12:45:54+04:00", "utc": "1997-09-02T08:45:54Z", "ms": 873189954205.0004 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-09-03", "window": { "start": { "local": "1997-09-03T11:57:35+04:00", "utc": "1997-09-03T07:57:35Z", "ms": 873273454842.3099 }, "end": { "local": "1997-09-03T12:45:35+04:00", "utc": "1997-09-03T08:45:35Z", "ms": 873276334842.3099 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 03:52 on Tue 2 Sep to 06:29 on Wed 3 Sep.", "fact": "1997-09-01T23:51:34Z → 1997-09-03T02:29:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:58–12:46 on the 2nd, 11:58–12:46 on the 3rd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 48 of 48 minutes on the 2nd and 0 of 48 on the 3rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 19698 s" }, { "step": "ruling", "text": "Rudra Vrata, Abu Dhabi, 1997: Tuesday 2 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rudra-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Rudra vrata (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-02", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Rudra Vrata 1997 falls on Tuesday 2 September. Pratipadā runs from 03:52 on Tue 2 Sep to 06:29 on Wed 3 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rudra-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/haritalika-vrata", "festival": "haritalika-vrata", "name": "Haritālikā Vrata", "everyday": "Hartalika Teej", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1215, "anga": { "type": "tithi", "index": 2, "key": "tritiya", "name": "Tṛtīyā", "start": { "local": "1997-09-04T09:06:54+04:00", "utc": "1997-09-04T05:06:54Z", "ms": 873349613674.2603 }, "end": { "local": "1997-09-05T11:36:40+04:00", "utc": "1997-09-05T07:36:40Z", "ms": 873445000093.5121 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-04T09:06:54+04:00", "utc": "1997-09-04T05:06:54Z", "ms": 873349613674.2603 }, "end": { "local": "1997-09-05T11:36:40+04:00", "utc": "1997-09-05T07:36:40Z", "ms": 873445000093.5121 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-04", "window": { "start": { "local": "1997-09-04T11:57:15+04:00", "utc": "1997-09-04T07:57:15Z", "ms": 873359835216.904 }, "end": { "local": "1997-09-04T12:45:15+04:00", "utc": "1997-09-04T08:45:15Z", "ms": 873362715216.904 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-09-05", "window": { "start": { "local": "1997-09-05T11:56:55+04:00", "utc": "1997-09-05T07:56:55Z", "ms": 873446215343.5018 }, "end": { "local": "1997-09-05T12:44:55+04:00", "utc": "1997-09-05T08:44:55Z", "ms": 873449095343.5018 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Tṛtīyā runs from 09:07 on Thu 4 Sep to 11:37 on Fri 5 Sep.", "fact": "1997-09-04T05:06:54Z → 1997-09-05T07:36:40Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 4th, 11:57–12:45 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Tṛtīyā must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 1215 s" }, { "step": "ruling", "text": "Haritālikā Vrata, Abu Dhabi, 1997: Thursday 4 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "haritalika-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 3 Haritalika vrata (paraviddha), Gauri vrata (Orissa), Gauri (Mysore)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Haritālikā Vrata (Hartalika Teej) 1997 falls on Thursday 4 September. Tṛtīyā runs from 09:07 on Thu 4 Sep to 11:37 on Fri 5 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/haritalika-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ganesha-chaturthi", "festival": "ganesha-chaturthi", "name": "Gaṇeśa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1215, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-09-05T11:36:40+04:00", "utc": "1997-09-05T07:36:40Z", "ms": 873445000093.5121 }, "end": { "local": "1997-09-06T13:50:10+04:00", "utc": "1997-09-06T09:50:10Z", "ms": 873539409981.1312 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-05T11:36:40+04:00", "utc": "1997-09-05T07:36:40Z", "ms": 873445000093.5121 }, "end": { "local": "1997-09-06T13:50:10+04:00", "utc": "1997-09-06T09:50:10Z", "ms": 873539409981.1312 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-05", "window": { "start": { "local": "1997-09-05T11:56:55+04:00", "utc": "1997-09-05T07:56:55Z", "ms": 873446215343.5018 }, "end": { "local": "1997-09-05T12:44:55+04:00", "utc": "1997-09-05T08:44:55Z", "ms": 873449095343.5018 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-09-06", "window": { "start": { "local": "1997-09-06T11:56:35+04:00", "utc": "1997-09-06T07:56:35Z", "ms": 873532595237.231 }, "end": { "local": "1997-09-06T12:44:35+04:00", "utc": "1997-09-06T08:44:35Z", "ms": 873535475237.231 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "purvaviddha", "explanation": [ { "step": "anga", "text": "Caturthī runs from 11:37 on Fri 5 Sep to 13:50 on Sat 6 Sep.", "fact": "1997-09-05T07:36:40Z → 1997-09-06T09:50:10Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 5th, 11:57–12:45 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Both middays qualify. Pūrvaviddhā: the first is taken.", "fact": "priority: purvaviddha → purvaviddha · margin 1215 s" }, { "step": "ruling", "text": "Gaṇeśa Caturthī, Abu Dhabi, 1997: Friday 5 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ganesha-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Varada caturthi (purvaviddha, madhyahnavyapini), Samvatsari parva (Jain-caturthi paksa), Saubhagya caturthi (Bengal), Ganesa caturthi (madhyahna vyapini and purvaviddha)" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Gaṇeśa Caturthī 1997 falls on Friday 5 September. Caturthī runs from 11:37 on Fri 5 Sep to 13:50 on Sat 6 Sep and covers all of madhyāhna that midday. It also reaches the next midday for 48 minutes; by the rule the first midday is taken.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ganesha-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rishi-panchami", "festival": "rishi-panchami", "name": "Ṛṣi Pañcamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-07", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3935, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-09-06T13:50:10+04:00", "utc": "1997-09-06T09:50:10Z", "ms": 873539409981.1312 }, "end": { "local": "1997-09-07T15:38:42+04:00", "utc": "1997-09-07T11:38:42Z", "ms": 873632322046.2997 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-06T13:50:10+04:00", "utc": "1997-09-06T09:50:10Z", "ms": 873539409981.1312 }, "end": { "local": "1997-09-07T15:38:42+04:00", "utc": "1997-09-07T11:38:42Z", "ms": 873632322046.2997 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-06", "window": { "start": { "local": "1997-09-06T11:56:35+04:00", "utc": "1997-09-06T07:56:35Z", "ms": 873532595237.231 }, "end": { "local": "1997-09-06T12:44:35+04:00", "utc": "1997-09-06T08:44:35Z", "ms": 873535475237.231 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-09-07", "window": { "start": { "local": "1997-09-07T11:56:15+04:00", "utc": "1997-09-07T07:56:15Z", "ms": 873618974913.7195 }, "end": { "local": "1997-09-07T12:44:15+04:00", "utc": "1997-09-07T08:44:15Z", "ms": 873621854913.7195 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 13:50 on Sat 6 Sep to 15:39 on Sun 7 Sep.", "fact": "1997-09-06T09:50:10Z → 1997-09-07T11:38:42Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:57–12:45 on the 6th, 11:56–12:44 on the 7th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 0 of 48 minutes on the 6th and 48 of 48 on the 7th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: disputed → only-day · margin 3935 s" }, { "step": "ruling", "text": "Ṛṣi Pañcamī, Abu Dhabi, 1997: Sunday 7 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rishi-panchami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Rsi pancami (madhyahnavyapini) — If occurs on two successive days, it is to be observed according to Madhava on the 1st day and according to Hemadri and Divodasa on the 2nd day" } ], "kaala": "madhyahna", "priority": "disputed", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-07", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-07", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ṛṣi Pañcamī 1997 falls on Sunday 7 September. Pañcamī runs from 13:50 on Sat 6 Sep to 15:39 on Sun 7 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rishi-panchami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/surya-shashthi-bhadrapada", "festival": "surya-shashthi-bhadrapada", "name": "Sūrya Ṣaṣṭhī (Bhādrapada)", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10467, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-09-07T15:38:42+04:00", "utc": "1997-09-07T11:38:42Z", "ms": 873632322046.2997 }, "end": { "local": "1997-09-08T16:54:07+04:00", "utc": "1997-09-08T12:54:07Z", "ms": 873723246767.9481 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-07T15:38:42+04:00", "utc": "1997-09-07T11:38:42Z", "ms": 873632322046.2997 }, "end": { "local": "1997-09-08T16:54:07+04:00", "utc": "1997-09-08T12:54:07Z", "ms": 873723246767.9481 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-07", "window": { "start": { "local": "1997-09-07T11:56:15+04:00", "utc": "1997-09-07T07:56:15Z", "ms": 873618974913.7195 }, "end": { "local": "1997-09-07T12:44:15+04:00", "utc": "1997-09-07T08:44:15Z", "ms": 873621854913.7195 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-09-08", "window": { "start": { "local": "1997-09-08T11:55:54+04:00", "utc": "1997-09-08T07:55:54Z", "ms": 873705354389.144 }, "end": { "local": "1997-09-08T12:43:54+04:00", "utc": "1997-09-08T08:43:54Z", "ms": 873708234389.144 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 15:39 on Sun 7 Sep to 16:54 on Mon 8 Sep.", "fact": "1997-09-07T11:38:42Z → 1997-09-08T12:54:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 7th, 11:56–12:44 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10467 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī (Bhādrapada), Abu Dhabi, 1997: Monday 8 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi-bhadrapada", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Surya sasthi (paraviddha), Lolarka sasthi" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Sūrya Ṣaṣṭhī (Bhādrapada) 1997 falls on Monday 8 September. Ṣaṣṭhī runs from 15:39 on Sun 7 Sep to 16:54 on Mon 8 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/surya-shashthi-bhadrapada", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/muktabharana-vrata", "festival": "muktabharana-vrata", "name": "Muktābharaṇa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15012, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-09-08T16:54:07+04:00", "utc": "1997-09-08T12:54:07Z", "ms": 873723246767.9481 }, "end": { "local": "1997-09-09T17:29:43+04:00", "utc": "1997-09-09T13:29:43Z", "ms": 873811782728.602 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-08T16:54:07+04:00", "utc": "1997-09-08T12:54:07Z", "ms": 873723246767.9481 }, "end": { "local": "1997-09-09T17:29:43+04:00", "utc": "1997-09-09T13:29:43Z", "ms": 873811782728.602 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-08", "window": { "start": { "local": "1997-09-08T11:55:54+04:00", "utc": "1997-09-08T07:55:54Z", "ms": 873705354389.144 }, "end": { "local": "1997-09-08T12:43:54+04:00", "utc": "1997-09-08T08:43:54Z", "ms": 873708234389.144 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-09-09", "window": { "start": { "local": "1997-09-09T11:55:34+04:00", "utc": "1997-09-09T07:55:34Z", "ms": 873791733680.5247 }, "end": { "local": "1997-09-09T12:43:34+04:00", "utc": "1997-09-09T08:43:34Z", "ms": 873794613680.5247 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 16:54 on Mon 8 Sep to 17:30 on Tue 9 Sep.", "fact": "1997-09-08T12:54:07Z → 1997-09-09T13:29:43Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 8th, 11:56–12:44 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 48 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 15012 s" }, { "step": "ruling", "text": "Muktābharaṇa Vrata, Abu Dhabi, 1997: Tuesday 9 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "muktabharana-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Muktabharana vrata (purvaviddha), Lalita saptami (Bengal & Orissa)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Muktābharaṇa Vrata 1997 falls on Tuesday 9 September. Saptamī runs from 16:54 on Mon 8 Sep to 17:30 on Tue 9 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/muktabharana-vrata", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/radhashtami", "festival": "radhashtami", "name": "Rādhāṣṭamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16674, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-09-09T17:29:43+04:00", "utc": "1997-09-09T13:29:43Z", "ms": 873811782728.602 }, "end": { "local": "1997-09-10T17:21:07+04:00", "utc": "1997-09-10T13:21:07Z", "ms": 873897666865.3567 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-09T17:29:43+04:00", "utc": "1997-09-09T13:29:43Z", "ms": 873811782728.602 }, "end": { "local": "1997-09-10T17:21:07+04:00", "utc": "1997-09-10T13:21:07Z", "ms": 873897666865.3567 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-09", "window": { "start": { "local": "1997-09-09T11:55:34+04:00", "utc": "1997-09-09T07:55:34Z", "ms": 873791733680.5247 }, "end": { "local": "1997-09-09T12:43:34+04:00", "utc": "1997-09-09T08:43:34Z", "ms": 873794613680.5247 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-09-10", "window": { "start": { "local": "1997-09-10T11:55:13+04:00", "utc": "1997-09-10T07:55:13Z", "ms": 873878112804.5576 }, "end": { "local": "1997-09-10T12:43:13+04:00", "utc": "1997-09-10T08:43:13Z", "ms": 873880992804.5576 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 17:30 on Tue 9 Sep to 17:21 on Wed 10 Sep.", "fact": "1997-09-09T13:29:43Z → 1997-09-10T13:21:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:56–12:44 on the 9th, 11:55–12:43 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 9th and 48 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16674 s" }, { "step": "ruling", "text": "Rādhāṣṭamī, Abu Dhabi, 1997: Wednesday 10 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "radhashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Durvastami (purvaviddha — S 8 of saura Bhadra except Bengal), Mahalaksmi vratarambha, Radhastami (madhyahna vyapini)" } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Rādhāṣṭamī 1997 falls on Wednesday 10 September. Aṣṭamī runs from 17:30 on Tue 9 Sep to 17:21 on Wed 10 Sep and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/radhashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-09-13", "festival": "ekadashi", "name": "Parivartanī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22843, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-09-12T14:47:58+04:00", "utc": "1997-09-12T10:47:58Z", "ms": 874061277711.0359 }, "end": { "local": "1997-09-13T12:28:43+04:00", "utc": "1997-09-13T08:28:43Z", "ms": 874139323043.7242 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-12T14:47:58+04:00", "utc": "1997-09-12T10:47:58Z", "ms": 874061277711.0359 }, "end": { "local": "1997-09-13T12:28:43+04:00", "utc": "1997-09-13T08:28:43Z", "ms": 874139323043.7242 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-09-12", "window": { "start": { "local": "1997-09-12T06:07:40+04:00", "utc": "1997-09-12T02:07:40Z", "ms": 874030059735.6954 }, "end": { "local": "1997-09-12T06:07:40+04:00", "utc": "1997-09-12T02:07:40Z", "ms": 874030059735.6954 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-09-13", "window": { "start": { "local": "1997-09-13T06:08:01+04:00", "utc": "1997-09-13T02:08:01Z", "ms": 874116480521.2148 }, "end": { "local": "1997-09-13T06:08:01+04:00", "utc": "1997-09-13T02:08:01Z", "ms": 874116480521.2148 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 14:48 on Fri 12 Sep to 12:29 on Sat 13 Sep.", "fact": "1997-09-12T10:47:58Z → 1997-09-13T08:28:43Z" }, { "step": "kaala", "text": "Sunrise is at 06:08 on the 12th and 06:08 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 12th and is on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22843 s" }, { "step": "ruling", "text": "Parivartanī Ekādaśī, Abu Dhabi, 1997: Saturday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Parivartanī Ekādaśī 1997 falls on Saturday 13 September. Ekādaśī runs from 14:48 on Fri 12 Sep to 12:29 on Sat 13 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-09-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vamana-jayanti", "festival": "vamana-jayanti", "name": "Vāmana Jayantī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 806, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-09-13T12:28:43+04:00", "utc": "1997-09-13T08:28:43Z", "ms": 874139323043.7242 }, "end": { "local": "1997-09-14T09:35:08+04:00", "utc": "1997-09-14T05:35:08Z", "ms": 874215308078.4468 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-13T12:28:43+04:00", "utc": "1997-09-13T08:28:43Z", "ms": 874139323043.7242 }, "end": { "local": "1997-09-14T09:35:08+04:00", "utc": "1997-09-14T05:35:08Z", "ms": 874215308078.4468 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-09-13", "window": { "start": { "local": "1997-09-13T11:54:09+04:00", "utc": "1997-09-13T07:54:09Z", "ms": 874137249363.6062 }, "end": { "local": "1997-09-13T12:42:09+04:00", "utc": "1997-09-13T08:42:09Z", "ms": 874140129363.6062 } }, "covered_min": 13, "window_min": 48, "qualifies": true }, { "local_date": "1997-09-14", "window": { "start": { "local": "1997-09-14T11:53:48+04:00", "utc": "1997-09-14T07:53:48Z", "ms": 874223628013.1458 }, "end": { "local": "1997-09-14T12:41:48+04:00", "utc": "1997-09-14T08:41:48Z", "ms": 874226508013.1458 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 12:29 on Sat 13 Sep to 09:35 on Sun 14 Sep.", "fact": "1997-09-13T08:28:43Z → 1997-09-14T05:35:08Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:54–12:42 on the 13th, 11:54–12:42 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 13 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 806 s" }, { "step": "ruling", "text": "Vāmana Jayantī, Abu Dhabi, 1997: Saturday 13 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vamana-jayanti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Visnuparivartanotsava, Sakrotthana (in any of the naksatras U. Asadha, Sravana & Dhanistha), Kalki dvadasi, Sravana dvadasi (when combined with naksatra Sravana), Vamana jayanti (madhyahna vyapini)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vāmana Jayantī 1997 falls on Saturday 13 September. Dvādaśī runs from 12:29 on Sat 13 Sep to 09:35 on Sun 14 Sep and covers 13 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vamana-jayanti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-09-14", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 31927, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-09-14T09:35:08+04:00", "utc": "1997-09-14T05:35:08Z", "ms": 874215308078.4468 }, "end": { "local": "1997-09-15T06:14:55+04:00", "utc": "1997-09-15T02:14:55Z", "ms": 874289695413.7855 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-14T09:35:08+04:00", "utc": "1997-09-14T05:35:08Z", "ms": 874215308078.4468 }, "end": { "local": "1997-09-15T06:14:55+04:00", "utc": "1997-09-15T02:14:55Z", "ms": 874289695413.7855 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-09-14", "window": { "start": { "local": "1997-09-14T18:27:15+04:00", "utc": "1997-09-14T14:27:15Z", "ms": 874247234744.8881 }, "end": { "local": "1997-09-14T20:00:46+04:00", "utc": "1997-09-14T16:00:46Z", "ms": 874252846383.2959 } }, "covered_min": 94, "window_min": 94, "qualifies": true }, { "local_date": "1997-09-15", "window": { "start": { "local": "1997-09-15T18:26:11+04:00", "utc": "1997-09-15T14:26:11Z", "ms": 874333571163.009 }, "end": { "local": "1997-09-15T19:59:54+04:00", "utc": "1997-09-15T15:59:54Z", "ms": 874339194047.1705 } }, "covered_min": 0, "window_min": 94, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 09:35 on Sun 14 Sep to 06:15 on Mon 15 Sep.", "fact": "1997-09-14T05:35:08Z → 1997-09-15T02:14:55Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:27–20:01 on the 14th, 18:26–20:00 on the 15th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 94 of 94 minutes on the 14th and 0 of 94 on the 15th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 31927 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Sunday 14 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-14", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Sunday 14 September. Trayodaśī runs from 09:35 on Sun 14 Sep to 06:15 on Mon 15 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-09-14", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ananta-chaturdashi", "festival": "ananta-chaturdashi", "name": "Ananta Caturdaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-15", "confidence": "boundary", "boundary_reasons": [ "absent-unstated" ], "boundary_margin_s": 373, "anga": { "type": "tithi", "index": 13, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-09-15T06:14:55+04:00", "utc": "1997-09-15T02:14:55Z", "ms": 874289695413.7855 }, "end": { "local": "1997-09-16T02:36:53+04:00", "utc": "1997-09-15T22:36:53Z", "ms": 874363012908.7639 }, "month": { "amanta": 5, "purnimanta": 5, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Bhādrapada" } }, "span": { "of": "tithi", "start": { "local": "1997-09-15T06:14:55+04:00", "utc": "1997-09-15T02:14:55Z", "ms": 874289695413.7855 }, "end": { "local": "1997-09-16T02:36:53+04:00", "utc": "1997-09-15T22:36:53Z", "ms": 874363012908.7639 } }, "kaala": "udaya-3", "days": [ { "local_date": "1997-09-15", "window": { "start": { "local": "1997-09-15T06:08:42+04:00", "utc": "1997-09-15T02:08:42Z", "ms": 874289322032.9471 }, "end": { "local": "1997-09-15T08:36:12+04:00", "utc": "1997-09-15T04:36:12Z", "ms": 874298171858.9595 } }, "covered_min": 141, "window_min": 147, "qualifies": false }, { "local_date": "1997-09-16", "window": { "start": { "local": "1997-09-16T06:09:03+04:00", "utc": "1997-09-16T02:09:03Z", "ms": 874375742794.2201 }, "end": { "local": "1997-09-16T08:36:16+04:00", "utc": "1997-09-16T04:36:16Z", "ms": 874384575733.4163 } }, "covered_min": 0, "window_min": 147, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 06:15 on Mon 15 Sep to 02:37 on Tue 16 Sep.", "fact": "1997-09-15T02:14:55Z → 1997-09-15T22:36:53Z" }, { "step": "kaala", "text": "The first three muhūrtas after sunrise is first 3 of 15 day muhūrtas: 06:09–08:36 on the 15th, 06:09–08:36 on the 16th.", "fact": "udaya-3: day-muhurta-1-3 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must hold through the first three muhūrtas after sunrise. It covers 141 of 147 minutes on the 15th and 0 of 147 on the 16th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Neither morning qualifies. The day the tithi falls on is taken.", "fact": "priority: unstated → tithi-day · margin 373 s" }, { "step": "ruling", "text": "Ananta Caturdaśī, Abu Dhabi, 1997: Monday 15 September.", "fact": "confidence: boundary (absent-unstated)" } ], "rule": { "kind": "lunar", "id": "ananta-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 14 Ananta caturdasi (covering three muhurtas from sunrise, but one muhurta in Bengal)." } ], "not_evaluated": "In Bengal the row asks for one muhūrta from sunrise; that reading is not applied.", "kaala": "udaya-3", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-15", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-15", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Ananta Caturdaśī 1997 falls on Monday 15 September. Caturdaśī runs from 06:15 on Mon 15 Sep to 02:37 on Tue 16 Sep, and reaches the first three muhūrtas after sunrise on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ananta-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-09-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-19", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29868, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-09-19T12:19:04+04:00", "utc": "1997-09-19T08:19:04Z", "ms": 874657143787.4962 }, "end": { "local": "1997-09-20T09:36:05+04:00", "utc": "1997-09-20T05:36:05Z", "ms": 874733765137.2433 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-19T12:19:04+04:00", "utc": "1997-09-19T08:19:04Z", "ms": 874657143787.4962 }, "end": { "local": "1997-09-20T09:36:05+04:00", "utc": "1997-09-20T05:36:05Z", "ms": 874733765137.2433 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-09-19", "window": { "start": { "local": "1997-09-19T20:36:52+04:00", "utc": "1997-09-19T16:36:52Z", "ms": 874687011504.2567 }, "end": { "local": "1997-09-19T20:36:52+04:00", "utc": "1997-09-19T16:36:52Z", "ms": 874687011504.2567 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-09-20", "window": { "start": { "local": "1997-09-20T21:24:51+04:00", "utc": "1997-09-20T17:24:51Z", "ms": 874776290544.6752 }, "end": { "local": "1997-09-20T21:24:51+04:00", "utc": "1997-09-20T17:24:51Z", "ms": 874776290544.6752 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:19 on Fri 19 Sep to 09:36 on Sat 20 Sep.", "fact": "1997-09-19T08:19:04Z → 1997-09-20T05:36:05Z" }, { "step": "kaala", "text": "Moonrise is at 20:37 on the 19th and 21:25 on the 20th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 19th and is not on the 20th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29868 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Friday 19 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-19", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-19", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Friday 19 September. Caturthī runs from 12:19 on Fri 19 Sep to 09:36 on Sat 20 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-09-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/chandra-shashthi", "festival": "chandra-shashthi", "name": "Candra Ṣaṣṭhī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-21", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28496, "anga": { "type": "tithi", "index": 20, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-09-21T07:30:43+04:00", "utc": "1997-09-21T03:30:43Z", "ms": 874812642593.62 }, "end": { "local": "1997-09-22T06:08:58+04:00", "utc": "1997-09-22T02:08:58Z", "ms": 874894137702.4738 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-21T07:30:43+04:00", "utc": "1997-09-21T03:30:43Z", "ms": 874812642593.62 }, "end": { "local": "1997-09-22T06:08:58+04:00", "utc": "1997-09-22T02:08:58Z", "ms": 874894137702.4738 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-09-20", "window": { "start": { "local": "1997-09-20T21:24:51+04:00", "utc": "1997-09-20T17:24:51Z", "ms": 874776290544.6752 }, "end": { "local": "1997-09-20T21:24:51+04:00", "utc": "1997-09-20T17:24:51Z", "ms": 874776290544.6752 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-09-21", "window": { "start": { "local": "1997-09-21T22:14:02+04:00", "utc": "1997-09-21T18:14:02Z", "ms": 874865642194.5896 }, "end": { "local": "1997-09-21T22:14:02+04:00", "utc": "1997-09-21T18:14:02Z", "ms": 874865642194.5896 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 07:31 on Sun 21 Sep to 06:09 on Mon 22 Sep.", "fact": "1997-09-21T03:30:43Z → 1997-09-22T02:08:58Z" }, { "step": "kaala", "text": "Moonrise is at 21:25 on the 20th and 22:14 on the 21st.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Ṣaṣṭhī must be current at moonrise. It is not on the 20th and is on the 21st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28496 s" }, { "step": "ruling", "text": "Candra Ṣaṣṭhī, Abu Dhabi, 1997: Sunday 21 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "chandra-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 6 Candra sasthi (Sasthi current at moon-rise, if occurs on two successive days, it is to be observed on the first day)." } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-21", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-21", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Candra Ṣaṣṭhī 1997 falls on Sunday 21 September. Ṣaṣṭhī runs from 07:31 on Sun 21 Sep to 06:09 on Mon 22 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/chandra-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/jitashtami", "festival": "jitashtami", "name": "Jitāṣṭamī", "everyday": "Jitiya", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34838, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-09-23T05:34:25+04:00", "utc": "1997-09-23T01:34:25Z", "ms": 874978465439.1382 }, "end": { "local": "1997-09-24T05:47:38+04:00", "utc": "1997-09-24T01:47:38Z", "ms": 875065658271.2083 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-23T05:34:25+04:00", "utc": "1997-09-23T01:34:25Z", "ms": 874978465439.1382 }, "end": { "local": "1997-09-24T05:47:38+04:00", "utc": "1997-09-24T01:47:38Z", "ms": 875065658271.2083 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-09-22", "window": { "start": { "local": "1997-09-22T18:18:45+04:00", "utc": "1997-09-22T14:18:45Z", "ms": 874937925228.477 }, "end": { "local": "1997-09-22T19:53:47+04:00", "utc": "1997-09-22T15:53:47Z", "ms": 874943627205.5077 } }, "covered_min": 0, "window_min": 95, "qualifies": false }, { "local_date": "1997-09-23", "window": { "start": { "local": "1997-09-23T18:17:42+04:00", "utc": "1997-09-23T14:17:42Z", "ms": 875024261751.1318 }, "end": { "local": "1997-09-23T19:52:55+04:00", "utc": "1997-09-23T15:52:55Z", "ms": 875029975062.4602 } }, "covered_min": 95, "window_min": 95, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:34 on Tue 23 Sep to 05:48 on Wed 24 Sep.", "fact": "1997-09-23T01:34:25Z → 1997-09-24T01:47:38Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:19–19:54 on the 22nd, 18:18–19:53 on the 23rd.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during pradoṣa. It covers 0 of 95 minutes on the 22nd and 95 of 95 on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34838 s" }, { "step": "ruling", "text": "Jitāṣṭamī, Abu Dhabi, 1997: Tuesday 23 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "jitashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-23", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Jitāṣṭamī (Jitiya) 1997 falls on Tuesday 23 September. Aṣṭamī runs from 05:34 on Tue 23 Sep to 05:48 on Wed 24 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/jitashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/mahalakshmi-vrata-samapana", "festival": "mahalakshmi-vrata-samapana", "name": "Mahālakṣmī Vrata Samāpana", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-23", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 21120, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-09-23T05:34:25+04:00", "utc": "1997-09-23T01:34:25Z", "ms": 874978465439.1382 }, "end": { "local": "1997-09-24T05:47:38+04:00", "utc": "1997-09-24T01:47:38Z", "ms": 875065658271.2083 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-23T05:34:25+04:00", "utc": "1997-09-23T01:34:25Z", "ms": 874978465439.1382 }, "end": { "local": "1997-09-24T05:47:38+04:00", "utc": "1997-09-24T01:47:38Z", "ms": 875065658271.2083 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-09-22", "window": { "start": { "local": "1997-09-22T23:04:24+04:00", "utc": "1997-09-22T19:04:24Z", "ms": 874955064186.1913 }, "end": { "local": "1997-09-22T23:04:24+04:00", "utc": "1997-09-22T19:04:24Z", "ms": 874955064186.1913 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-09-23", "window": { "start": { "local": "1997-09-23T23:55:38+04:00", "utc": "1997-09-23T19:55:38Z", "ms": 875044538129.865 }, "end": { "local": "1997-09-23T23:55:38+04:00", "utc": "1997-09-23T19:55:38Z", "ms": 875044538129.865 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 05:34 on Tue 23 Sep to 05:48 on Wed 24 Sep.", "fact": "1997-09-23T01:34:25Z → 1997-09-24T01:47:38Z" }, { "step": "kaala", "text": "Moonrise is at 23:04 on the 22nd and 23:56 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is not on the 22nd and is on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 21120 s" }, { "step": "ruling", "text": "Mahālakṣmī Vrata Samāpana, Abu Dhabi, 1997: Tuesday 23 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalakshmi-vrata-samapana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Mahalaksmi vrata samapana (current at moonrise), Jitastami (pradosa), Jimutavahana puja" } ], "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-23", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-23", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mahālakṣmī Vrata Samāpana 1997 falls on Tuesday 23 September. Aṣṭamī runs from 05:34 on Tue 23 Sep to 05:48 on Wed 24 Sep and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/mahalakshmi-vrata-samapana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-09-27", "festival": "ekadashi", "name": "Indirā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 7817, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-09-26T08:22:52+04:00", "utc": "1997-09-26T04:22:52Z", "ms": 875247772087.2827 }, "end": { "local": "1997-09-27T10:30:23+04:00", "utc": "1997-09-27T06:30:23Z", "ms": 875341823450.3258 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-26T08:22:52+04:00", "utc": "1997-09-26T04:22:52Z", "ms": 875247772087.2827 }, "end": { "local": "1997-09-27T10:30:23+04:00", "utc": "1997-09-27T06:30:23Z", "ms": 875341823450.3258 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-09-26", "window": { "start": { "local": "1997-09-26T06:12:35+04:00", "utc": "1997-09-26T02:12:35Z", "ms": 875239955164.866 }, "end": { "local": "1997-09-26T06:12:35+04:00", "utc": "1997-09-26T02:12:35Z", "ms": 875239955164.866 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-09-27", "window": { "start": { "local": "1997-09-27T06:12:57+04:00", "utc": "1997-09-27T02:12:57Z", "ms": 875326377239.1862 }, "end": { "local": "1997-09-27T06:12:57+04:00", "utc": "1997-09-27T02:12:57Z", "ms": 875326377239.1862 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:23 on Fri 26 Sep to 10:30 on Sat 27 Sep.", "fact": "1997-09-26T04:22:52Z → 1997-09-27T06:30:23Z" }, { "step": "kaala", "text": "Sunrise is at 06:13 on the 26th and 06:13 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 26th and is on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 7817 s" }, { "step": "ruling", "text": "Indirā Ekādaśī, Abu Dhabi, 1997: Saturday 27 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Indirā Ekādaśī 1997 falls on Saturday 27 September. Ekādaśī runs from 08:23 on Fri 26 Sep to 10:30 on Sat 27 Sep and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-09-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-09-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9249, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-09-28T12:58:31+04:00", "utc": "1997-09-28T08:58:31Z", "ms": 875437110840.0404 }, "end": { "local": "1997-09-29T15:37:16+04:00", "utc": "1997-09-29T11:37:16Z", "ms": 875533035785.736 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-28T12:58:31+04:00", "utc": "1997-09-28T08:58:31Z", "ms": 875437110840.0404 }, "end": { "local": "1997-09-29T15:37:16+04:00", "utc": "1997-09-29T11:37:16Z", "ms": 875533035785.736 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-09-28", "window": { "start": { "local": "1997-09-28T18:12:27+04:00", "utc": "1997-09-28T14:12:27Z", "ms": 875455946962.4698 }, "end": { "local": "1997-09-28T19:48:37+04:00", "utc": "1997-09-28T15:48:37Z", "ms": 875461716969.8495 } }, "covered_min": 96, "window_min": 96, "qualifies": true }, { "local_date": "1997-09-29", "window": { "start": { "local": "1997-09-29T18:11:25+04:00", "utc": "1997-09-29T14:11:25Z", "ms": 875542284699.4077 }, "end": { "local": "1997-09-29T19:47:46+04:00", "utc": "1997-09-29T15:47:46Z", "ms": 875548066038.8223 } }, "covered_min": 0, "window_min": 96, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:59 on Sun 28 Sep to 15:37 on Mon 29 Sep.", "fact": "1997-09-28T08:58:31Z → 1997-09-29T11:37:16Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 18:12–19:49 on the 28th, 18:11–19:48 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 96 of 96 minutes on the 28th and 0 of 96 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9249 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Sunday 28 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-28", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Sunday 28 September. Trayodaśī runs from 12:59 on Sun 28 Sep to 15:37 on Mon 29 Sep and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-09-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-09-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-09-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 19854, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-09-29T15:37:16+04:00", "utc": "1997-09-29T11:37:16Z", "ms": 875533035785.736 }, "end": { "local": "1997-09-30T18:17:31+04:00", "utc": "1997-09-30T14:17:31Z", "ms": 875629050741.7228 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-29T15:37:16+04:00", "utc": "1997-09-29T11:37:16Z", "ms": 875533035785.736 }, "end": { "local": "1997-09-30T18:17:31+04:00", "utc": "1997-09-30T14:17:31Z", "ms": 875629050741.7228 } }, "kaala": "nishita", "days": [ { "local_date": "1997-09-29", "window": { "start": { "local": "1997-09-29T23:48:45+04:00", "utc": "1997-09-29T19:48:45Z", "ms": 875562524722.2122 }, "end": { "local": "1997-09-30T00:36:45+04:00", "utc": "1997-09-29T20:36:45Z", "ms": 875565404722.2122 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-09-30", "window": { "start": { "local": "1997-09-30T23:48:25+04:00", "utc": "1997-09-30T19:48:25Z", "ms": 875648905218.5674 }, "end": { "local": "1997-10-01T00:36:25+04:00", "utc": "1997-09-30T20:36:25Z", "ms": 875651785218.5674 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 15:37 on Mon 29 Sep to 18:18 on Tue 30 Sep.", "fact": "1997-09-29T11:37:16Z → 1997-09-30T14:17:31Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:49–00:37 on the 29th, 23:48–00:36 on the 30th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 29th and 0 of 48 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 19854 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Monday 29 September.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-09-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-09-29", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Monday 29 September. Caturdaśī runs from 15:37 on Mon 29 Sep to 18:18 on Tue 30 Sep and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-09-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/mahalaya-amavasya", "festival": "mahalaya-amavasya", "name": "Mahālaya Amāvāsyā", "everyday": "Sarvapitṛ Amāvāsyā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9024, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1997-09-30T18:17:31+04:00", "utc": "1997-09-30T14:17:31Z", "ms": 875629050741.7228 }, "end": { "local": "1997-10-01T20:51:31+04:00", "utc": "1997-10-01T16:51:31Z", "ms": 875724690533.3569 }, "month": { "amanta": 5, "purnimanta": 6, "adhika": false, "amanta_name": "Bhādrapada", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-09-30T18:17:31+04:00", "utc": "1997-09-30T14:17:31Z", "ms": 875629050741.7228 }, "end": { "local": "1997-10-01T20:51:31+04:00", "utc": "1997-10-01T16:51:31Z", "ms": 875724690533.3569 } }, "kaala": "aparahna", "days": [ { "local_date": "1997-09-30", "window": { "start": { "local": "1997-09-30T13:23:52+04:00", "utc": "1997-09-30T09:23:52Z", "ms": 875611431532.9873 }, "end": { "local": "1997-09-30T15:47:07+04:00", "utc": "1997-09-30T11:47:07Z", "ms": 875620027128.9775 } }, "covered_min": 0, "window_min": 143, "qualifies": false }, { "local_date": "1997-10-01", "window": { "start": { "local": "1997-10-01T13:23:24+04:00", "utc": "1997-10-01T09:23:24Z", "ms": 875697803722.9025 }, "end": { "local": "1997-10-01T15:46:22+04:00", "utc": "1997-10-01T11:46:22Z", "ms": 875706382393.1476 } }, "covered_min": 143, "window_min": 143, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 18:18 on Tue 30 Sep to 20:52 on Wed 1 Oct.", "fact": "1997-09-30T14:17:31Z → 1997-10-01T16:51:31Z" }, { "step": "kaala", "text": "Aparāhṇa is 10th to 12th of 15 day muhūrtas: 13:24–15:47 on the 30th, 13:23–15:46 on the 1st.", "fact": "aparahna: day-muhurta-10-12 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during aparāhṇa. It covers 0 of 143 minutes on the 30th and 143 of 143 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 103" }, { "step": "tie_break", "text": "Only one afternoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 9024 s" }, { "step": "ruling", "text": "Mahālaya Amāvāsyā, Abu Dhabi, 1997: Wednesday 1 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahalaya-amavasya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 103", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Mahalaya amavasya (aparahnavyapini)" } ], "not_evaluated": "The note on p. 106 gives the first day in a decreasing tithimāna and the second in an increasing one, when amāvāsyā covers the whole of aparāhṇa on both days; tithimāna is not computed.", "kaala": "aparahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-01", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mahālaya Amāvāsyā 1997 falls on Wednesday 1 October. Amāvasyā runs from 18:18 on Tue 30 Sep to 20:52 on Wed 1 Oct and covers all of aparāhṇa that afternoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/mahalaya-amavasya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/navaratra-arambha", "festival": "navaratra-arambha", "name": "Navarātrārambha", "everyday": "Navratri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29736, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-10-01T20:51:31+04:00", "utc": "1997-10-01T16:51:31Z", "ms": 875724690533.3569 }, "end": { "local": "1997-10-02T23:12:55+04:00", "utc": "1997-10-02T19:12:55Z", "ms": 875819575435.2358 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-01T20:51:31+04:00", "utc": "1997-10-01T16:51:31Z", "ms": 875724690533.3569 }, "end": { "local": "1997-10-02T23:12:55+04:00", "utc": "1997-10-02T19:12:55Z", "ms": 875819575435.2358 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-10-01", "window": { "start": { "local": "1997-10-01T11:47:54+04:00", "utc": "1997-10-01T07:47:54Z", "ms": 875692074387.7798 }, "end": { "local": "1997-10-01T12:35:54+04:00", "utc": "1997-10-01T08:35:54Z", "ms": 875694954387.7798 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-10-02", "window": { "start": { "local": "1997-10-02T11:47:35+04:00", "utc": "1997-10-02T07:47:35Z", "ms": 875778455334.3528 }, "end": { "local": "1997-10-02T12:35:35+04:00", "utc": "1997-10-02T08:35:35Z", "ms": 875781335334.3528 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 20:52 on Wed 1 Oct to 23:13 on Thu 2 Oct.", "fact": "1997-10-01T16:51:31Z → 1997-10-02T19:12:55Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 1st, 11:48–12:36 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29736 s" }, { "step": "ruling", "text": "Navarātrārambha, Abu Dhabi, 1997: Thursday 2 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "navaratra-arambha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Navaratrarambha (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-02", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Navarātrārambha (Navratri) 1997 falls on Thursday 2 October. Pratipadā runs from 20:52 on Wed 1 Oct to 23:13 on Thu 2 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/navaratra-arambha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-10-05", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27186, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-10-05T02:58:01+04:00", "utc": "1997-10-04T22:58:01Z", "ms": 876005881444.3547 }, "end": { "local": "1997-10-06T04:13:16+04:00", "utc": "1997-10-06T00:13:16Z", "ms": 876096795982.23 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-05T02:58:01+04:00", "utc": "1997-10-04T22:58:01Z", "ms": 876005881444.3547 }, "end": { "local": "1997-10-06T04:13:16+04:00", "utc": "1997-10-06T00:13:16Z", "ms": 876096795982.23 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-10-05", "window": { "start": { "local": "1997-10-05T11:46:40+04:00", "utc": "1997-10-05T07:46:40Z", "ms": 876037600106.6356 }, "end": { "local": "1997-10-05T12:34:40+04:00", "utc": "1997-10-05T08:34:40Z", "ms": 876040480106.6356 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-10-06", "window": { "start": { "local": "1997-10-06T11:46:22+04:00", "utc": "1997-10-06T07:46:22Z", "ms": 876123982398.2783 }, "end": { "local": "1997-10-06T12:34:22+04:00", "utc": "1997-10-06T08:34:22Z", "ms": 876126862398.2783 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 02:58 on Sun 5 Oct to 04:13 on Mon 6 Oct.", "fact": "1997-10-04T22:58:01Z → 1997-10-06T00:13:16Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:47–12:35 on the 5th, 11:46–12:34 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27186 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Sunday 5 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Sunday 5 October. Caturthī runs from 02:58 on Sun 5 Oct to 04:13 on Mon 6 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-10-05", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/durga-saptami", "festival": "durga-saptami", "name": "Durgā Saptamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 3986, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-10-08T05:10:50+04:00", "utc": "1997-10-08T01:10:50Z", "ms": 876273049669.0703 }, "end": { "local": "1997-10-09T04:47:29+04:00", "utc": "1997-10-09T00:47:29Z", "ms": 876358048674.9443 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-08T05:10:50+04:00", "utc": "1997-10-08T01:10:50Z", "ms": 876273049669.0703 }, "end": { "local": "1997-10-09T04:47:29+04:00", "utc": "1997-10-09T00:47:29Z", "ms": 876358048674.9443 } }, "kaala": "udaya-1", "days": [ { "local_date": "1997-10-08", "window": { "start": { "local": "1997-10-08T06:17:16+04:00", "utc": "1997-10-08T02:17:16Z", "ms": 876277036060.2023 }, "end": { "local": "1997-10-08T07:04:16+04:00", "utc": "1997-10-08T03:04:16Z", "ms": 876279856336.9266 } }, "covered_min": 47, "window_min": 47, "qualifies": true }, { "local_date": "1997-10-09", "window": { "start": { "local": "1997-10-09T06:17:41+04:00", "utc": "1997-10-09T02:17:41Z", "ms": 876363461309.7335 }, "end": { "local": "1997-10-09T07:04:36+04:00", "utc": "1997-10-09T03:04:36Z", "ms": 876366276017.2843 } }, "covered_min": 0, "window_min": 47, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 05:11 on Wed 8 Oct to 04:47 on Thu 9 Oct.", "fact": "1997-10-08T01:10:50Z → 1997-10-09T00:47:29Z" }, { "step": "kaala", "text": "The first muhūrta after sunrise is 1st of 15 day muhūrtas: 06:17–07:04 on the 8th, 06:18–07:05 on the 9th.", "fact": "udaya-1: day-muhurta-1-1 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must hold through the first muhūrta after sunrise. It covers 47 of 47 minutes on the 8th and 0 of 47 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one morning qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 3986 s" }, { "step": "ruling", "text": "Durgā Saptamī, Abu Dhabi, 1997: Wednesday 8 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Durga saptami (paraviddha) — covering one muhurta from sunrise" } ], "kaala": "udaya-1", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Durgā Saptamī 1997 falls on Wednesday 8 October. Saptamī runs from 05:11 on Wed 8 Oct to 04:47 on Thu 9 Oct and covers all of the first muhūrta after sunrise that morning.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/durga-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/mahashtami", "festival": "mahashtami", "name": "Mahāṣṭamī", "everyday": "Durga Ashtami", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25083, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-10-09T04:47:29+04:00", "utc": "1997-10-09T00:47:29Z", "ms": 876358048674.9443 }, "end": { "local": "1997-10-10T03:47:20+04:00", "utc": "1997-10-09T23:47:20Z", "ms": 876440840357.5377 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-09T04:47:29+04:00", "utc": "1997-10-09T00:47:29Z", "ms": 876358048674.9443 }, "end": { "local": "1997-10-10T03:47:20+04:00", "utc": "1997-10-09T23:47:20Z", "ms": 876440840357.5377 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-10-09", "window": { "start": { "local": "1997-10-09T11:45:32+04:00", "utc": "1997-10-09T07:45:32Z", "ms": 876383131616.3645 }, "end": { "local": "1997-10-09T12:33:32+04:00", "utc": "1997-10-09T08:33:32Z", "ms": 876386011616.3645 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-10-10", "window": { "start": { "local": "1997-10-10T11:45:16+04:00", "utc": "1997-10-10T07:45:16Z", "ms": 876469515529.1799 }, "end": { "local": "1997-10-10T12:33:16+04:00", "utc": "1997-10-10T08:33:16Z", "ms": 876472395529.1799 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 04:47 on Thu 9 Oct to 03:47 on Fri 10 Oct.", "fact": "1997-10-09T00:47:29Z → 1997-10-09T23:47:20Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:46–12:34 on the 9th, 11:45–12:33 on the 10th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 48 of 48 minutes on the 9th and 0 of 48 on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 25083 s" }, { "step": "ruling", "text": "Mahāṣṭamī, Abu Dhabi, 1997: Thursday 9 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Mahastami (paraviddha)" } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mahāṣṭamī (Durga Ashtami) 1997 falls on Thursday 9 October. Aṣṭamī runs from 04:47 on Thu 9 Oct to 03:47 on Fri 10 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/mahashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/mahanavami", "festival": "mahanavami", "name": "Mahānavamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28675, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1997-10-10T03:47:20+04:00", "utc": "1997-10-09T23:47:20Z", "ms": 876440840357.5377 }, "end": { "local": "1997-10-11T02:10:46+04:00", "utc": "1997-10-10T22:10:46Z", "ms": 876521446225.8004 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-10T03:47:20+04:00", "utc": "1997-10-09T23:47:20Z", "ms": 876440840357.5377 }, "end": { "local": "1997-10-11T02:10:46+04:00", "utc": "1997-10-10T22:10:46Z", "ms": 876521446225.8004 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-10-10", "window": { "start": { "local": "1997-10-10T11:45:16+04:00", "utc": "1997-10-10T07:45:16Z", "ms": 876469515529.1799 }, "end": { "local": "1997-10-10T12:33:16+04:00", "utc": "1997-10-10T08:33:16Z", "ms": 876472395529.1799 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-10-11", "window": { "start": { "local": "1997-10-11T11:45:00+04:00", "utc": "1997-10-11T07:45:00Z", "ms": 876555899892.9065 }, "end": { "local": "1997-10-11T12:33:00+04:00", "utc": "1997-10-11T08:33:00Z", "ms": 876558779892.9065 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 03:47 on Fri 10 Oct to 02:11 on Sat 11 Oct.", "fact": "1997-10-09T23:47:20Z → 1997-10-10T22:10:46Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:45–12:33 on the 10th, 11:45–12:33 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 48 of 48 minutes on the 10th and 0 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 28675 s" }, { "step": "ruling", "text": "Mahānavamī, Abu Dhabi, 1997: Friday 10 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mahanavami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Mahanavami (purvaviddha) (In Bengal it is observed as paraviddha covering one muhurta from sunrise)." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mahānavamī 1997 falls on Friday 10 October. Navamī runs from 03:47 on Fri 10 Oct to 02:11 on Sat 11 Oct and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/mahanavami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vijaya-dashami", "festival": "vijaya-dashami", "name": "Vijayā Daśamī", "everyday": "Dussehra", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13314, "anga": { "type": "tithi", "index": 9, "key": "dashami", "name": "Daśamī", "start": { "local": "1997-10-11T02:10:46+04:00", "utc": "1997-10-10T22:10:46Z", "ms": 876521446225.8004 }, "end": { "local": "1997-10-11T23:59:56+04:00", "utc": "1997-10-11T19:59:56Z", "ms": 876599995628.8037 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "conjunction", "start": { "local": "1997-10-11T02:10:46+04:00", "utc": "1997-10-10T22:10:46Z", "ms": 876521446225.8004 }, "end": { "local": "1997-10-11T21:41:21+04:00", "utc": "1997-10-11T17:41:21Z", "ms": 876591681311.7842 }, "nakshatra": { "type": "nakshatra", "index": 21, "key": "shravana", "name": "Śravaṇa", "start": { "local": "1997-10-10T23:04:12+04:00", "utc": "1997-10-10T19:04:12Z", "ms": 876510251635.8722 }, "end": { "local": "1997-10-11T21:41:21+04:00", "utc": "1997-10-11T17:41:21Z", "ms": 876591681311.7842 } } }, "kaala": "daytime", "days": [ { "local_date": "1997-10-10", "window": { "start": { "local": "1997-10-10T06:18:07+04:00", "utc": "1997-10-10T02:18:07Z", "ms": 876449886888.5933 }, "end": { "local": "1997-10-10T18:00:24+04:00", "utc": "1997-10-10T14:00:24Z", "ms": 876492024169.7665 } }, "covered_min": 0, "window_min": 702, "qualifies": false }, { "local_date": "1997-10-11", "window": { "start": { "local": "1997-10-11T06:18:33+04:00", "utc": "1997-10-11T02:18:33Z", "ms": 876536312807.3064 }, "end": { "local": "1997-10-11T17:59:27+04:00", "utc": "1997-10-11T13:59:27Z", "ms": 876578366978.5067 } }, "covered_min": 701, "window_min": 701, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Daśamī runs from 02:11 on Sat 11 Oct to 00:00 on Sat 11 Oct, and Śravaṇa from 23:04 on Fri 10 Oct to 21:41 on Sat 11 Oct. They are together from 02:11 on Sat 11 Oct to 21:41 on Sat 11 Oct.", "fact": "1997-10-10T22:10:46Z → 1997-10-11T17:41:21Z" }, { "step": "kaala", "text": "The day time is sunrise to sunset: 06:18–18:00 on the 10th, 06:19–17:59 on the 11th.", "fact": "daytime: sunrise-to-sunset · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Where Daśamī touches Śravaṇa in the day time, that day is taken. Together they cover 0 of 702 minutes on the 10th and 701 of 701 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one day qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13314 s" }, { "step": "ruling", "text": "Vijayā Daśamī, Abu Dhabi, 1997: Saturday 11 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vijaya-dashami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 10 Vijaya dasami (In Bengal it is observed as paraviddha, covering one muhurta from sunrise. In other places, if it touches Sravana naksatra in the day time it is observed on that day), Sarasvati visarjana (to be observed in naksatra Sravana), Dasahara." } ], "not_evaluated": "The Bengal reading (paraviddha, one muhūrta from sunrise) is not applied.", "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day", "conjunction": { "nakshatra": "Śravaṇa", "kaala": "daytime" } }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vijayā Daśamī (Dussehra) 1997 falls on Saturday 11 October. Daśamī runs from 02:11 on Sat 11 Oct to 00:00 on Sat 11 Oct and is with Śravaṇa in the day time that day, for 701 minutes.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vijaya-dashami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-10-12", "festival": "ekadashi", "name": "Pāśāṅkuśā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 22743, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-10-11T23:59:56+04:00", "utc": "1997-10-11T19:59:56Z", "ms": 876599995628.8037 }, "end": { "local": "1997-10-12T21:18:48+04:00", "utc": "1997-10-12T17:18:48Z", "ms": 876676727685.7194 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-11T23:59:56+04:00", "utc": "1997-10-11T19:59:56Z", "ms": 876599995628.8037 }, "end": { "local": "1997-10-12T21:18:48+04:00", "utc": "1997-10-12T17:18:48Z", "ms": 876676727685.7194 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-10-12", "window": { "start": { "local": "1997-10-12T06:18:59+04:00", "utc": "1997-10-12T02:18:59Z", "ms": 876622739077.1561 }, "end": { "local": "1997-10-12T06:18:59+04:00", "utc": "1997-10-12T02:18:59Z", "ms": 876622739077.1561 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-10-13", "window": { "start": { "local": "1997-10-13T06:19:26+04:00", "utc": "1997-10-13T02:19:26Z", "ms": 876709165710.4357 }, "end": { "local": "1997-10-13T06:19:26+04:00", "utc": "1997-10-13T02:19:26Z", "ms": 876709165710.4357 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 00:00 on Sat 11 Oct to 21:19 on Sun 12 Oct.", "fact": "1997-10-11T19:59:56Z → 1997-10-12T17:18:48Z" }, { "step": "kaala", "text": "Sunrise is at 06:19 on the 12th and 06:19 on the 13th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 12th and is not on the 13th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 22743 s" }, { "step": "ruling", "text": "Pāśāṅkuśā Ekādaśī, Abu Dhabi, 1997: Sunday 12 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-12", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Pāśāṅkuśā Ekādaśī 1997 falls on Sunday 12 October. Ekādaśī runs from 00:00 on Sat 11 Oct to 21:19 on Sun 12 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-10-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-10-13", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 929, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-10-13T18:13:04+04:00", "utc": "1997-10-13T14:13:04Z", "ms": 876751983749.9741 }, "end": { "local": "1997-10-14T14:49:54+04:00", "utc": "1997-10-14T10:49:54Z", "ms": 876826193807.242 }, "month": { "amanta": 6, "purnimanta": 6, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Āśvina" } }, "span": { "of": "tithi", "start": { "local": "1997-10-13T18:13:04+04:00", "utc": "1997-10-13T14:13:04Z", "ms": 876751983749.9741 }, "end": { "local": "1997-10-14T14:49:54+04:00", "utc": "1997-10-14T10:49:54Z", "ms": 876826193807.242 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-10-13", "window": { "start": { "local": "1997-10-13T17:57:34+04:00", "utc": "1997-10-13T13:57:34Z", "ms": 876751054395.1226 }, "end": { "local": "1997-10-13T19:36:33+04:00", "utc": "1997-10-13T15:36:33Z", "ms": 876756992838.5182 } }, "covered_min": 83, "window_min": 99, "qualifies": true }, { "local_date": "1997-10-14", "window": { "start": { "local": "1997-10-14T17:56:39+04:00", "utc": "1997-10-14T13:56:39Z", "ms": 876837399061.9612 }, "end": { "local": "1997-10-14T19:35:49+04:00", "utc": "1997-10-14T15:35:49Z", "ms": 876843348536.6473 } }, "covered_min": 0, "window_min": 99, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 18:13 on Mon 13 Oct to 14:50 on Tue 14 Oct.", "fact": "1997-10-13T14:13:04Z → 1997-10-14T10:49:54Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:58–19:37 on the 13th, 17:57–19:36 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 83 of 99 minutes on the 13th and 0 of 99 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 929 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Monday 13 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Monday 13 October. Trayodaśī runs from 18:13 on Mon 13 Oct to 14:50 on Tue 14 Oct and covers 83 of 99 minutes of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-10-13", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/karaka-chaturthi", "festival": "karaka-chaturthi", "name": "Karaka Caturthī", "everyday": "Karwa Chauth", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-19", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 271, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-10-18T22:50:27+04:00", "utc": "1997-10-18T18:50:27Z", "ms": 877200626942.0056 }, "end": { "local": "1997-10-19T20:57:55+04:00", "utc": "1997-10-19T16:57:55Z", "ms": 877280274704.5911 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-18T22:50:27+04:00", "utc": "1997-10-18T18:50:27Z", "ms": 877200626942.0056 }, "end": { "local": "1997-10-19T20:57:55+04:00", "utc": "1997-10-19T16:57:55Z", "ms": 877280274704.5911 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-10-18", "window": { "start": { "local": "1997-10-18T20:01:51+04:00", "utc": "1997-10-18T16:01:51Z", "ms": 877190511140.1948 }, "end": { "local": "1997-10-18T20:01:51+04:00", "utc": "1997-10-18T16:01:51Z", "ms": 877190511140.1948 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-10-19", "window": { "start": { "local": "1997-10-19T20:53:23+04:00", "utc": "1997-10-19T16:53:23Z", "ms": 877280003415.435 }, "end": { "local": "1997-10-19T20:53:23+04:00", "utc": "1997-10-19T16:53:23Z", "ms": 877280003415.435 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:50 on Sat 18 Oct to 20:58 on Sun 19 Oct.", "fact": "1997-10-18T18:50:27Z → 1997-10-19T16:57:55Z" }, { "step": "kaala", "text": "Moonrise is at 20:02 on the 18th and 20:53 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 271 s < 300 s" }, { "step": "ruling", "text": "Karaka Caturthī, Abu Dhabi, 1997: Sunday 19 October.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "karaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 4 Karaka caturthi (current at moon-rise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "moonrise", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-19", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Karaka Caturthī (Karwa Chauth) 1997 falls on Sunday 19 October. Caturthī runs from 22:50 on Sat 18 Oct to 20:58 on Sun 19 Oct and is current at moonrise that day. It is 4 min 31 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/karaka-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-10-19", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-19", "confidence": "boundary", "boundary_reasons": [ "margin" ], "boundary_margin_s": 271, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-10-18T22:50:27+04:00", "utc": "1997-10-18T18:50:27Z", "ms": 877200626942.0056 }, "end": { "local": "1997-10-19T20:57:55+04:00", "utc": "1997-10-19T16:57:55Z", "ms": 877280274704.5911 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-18T22:50:27+04:00", "utc": "1997-10-18T18:50:27Z", "ms": 877200626942.0056 }, "end": { "local": "1997-10-19T20:57:55+04:00", "utc": "1997-10-19T16:57:55Z", "ms": 877280274704.5911 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-10-18", "window": { "start": { "local": "1997-10-18T20:01:51+04:00", "utc": "1997-10-18T16:01:51Z", "ms": 877190511140.1948 }, "end": { "local": "1997-10-18T20:01:51+04:00", "utc": "1997-10-18T16:01:51Z", "ms": 877190511140.1948 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-10-19", "window": { "start": { "local": "1997-10-19T20:53:23+04:00", "utc": "1997-10-19T16:53:23Z", "ms": 877280003415.435 }, "end": { "local": "1997-10-19T20:53:23+04:00", "utc": "1997-10-19T16:53:23Z", "ms": 877280003415.435 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 22:50 on Sat 18 Oct to 20:58 on Sun 19 Oct.", "fact": "1997-10-18T18:50:27Z → 1997-10-19T16:57:55Z" }, { "step": "kaala", "text": "Moonrise is at 20:02 on the 18th and 20:53 on the 19th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 18th and is on the 19th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 271 s < 300 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Sunday 19 October.", "fact": "confidence: boundary (margin)" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-19", "confidence": "boundary" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-19", "confidence": "boundary" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Sunday 19 October. Caturthī runs from 22:50 on Sat 18 Oct to 20:58 on Sun 19 Oct and is current at moonrise that day. It is 4 min 31 s from a threshold: treat the date as contested.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-10-19", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ahoyi-ashtami", "festival": "ahoyi-ashtami", "name": "Ahoyī Aṣṭamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-22", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10123, "anga": { "type": "tithi", "index": 22, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-10-22T20:12:04+04:00", "utc": "1997-10-22T16:12:04Z", "ms": 877536724325.028 }, "end": { "local": "1997-10-23T21:35:28+04:00", "utc": "1997-10-23T17:35:28Z", "ms": 877628127699.926 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-22T20:12:04+04:00", "utc": "1997-10-22T16:12:04Z", "ms": 877536724325.028 }, "end": { "local": "1997-10-23T21:35:28+04:00", "utc": "1997-10-23T17:35:28Z", "ms": 877628127699.926 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-10-22", "window": { "start": { "local": "1997-10-22T23:32:01+04:00", "utc": "1997-10-22T19:32:01Z", "ms": 877548721034.2399 }, "end": { "local": "1997-10-22T23:32:01+04:00", "utc": "1997-10-22T19:32:01Z", "ms": 877548721034.2399 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-10-23", "window": { "start": { "local": "1997-10-24T00:24:10+04:00", "utc": "1997-10-23T20:24:10Z", "ms": 877638250268.7018 }, "end": { "local": "1997-10-24T00:24:10+04:00", "utc": "1997-10-23T20:24:10Z", "ms": 877638250268.7018 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 20:12 on Wed 22 Oct to 21:35 on Thu 23 Oct.", "fact": "1997-10-22T16:12:04Z → 1997-10-23T17:35:28Z" }, { "step": "kaala", "text": "Moonrise is at 23:32 on the 22nd and 00:24 on the 23rd.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Aṣṭamī must be current at moonrise. It is on the 22nd and is not on the 23rd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 10123 s" }, { "step": "ruling", "text": "Ahoyī Aṣṭamī, Abu Dhabi, 1997: Wednesday 22 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ahoyi-ashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 8 Ahoyi astami (Gujerat) (current at moonrise), Karastami (Maharashtra). If occurs on two successive days, it is to be observed on the second day." } ], "kaala": "moonrise", "priority": "paraviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-22", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-22", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ahoyī Aṣṭamī 1997 falls on Wednesday 22 October. Aṣṭamī runs from 20:12 on Wed 22 Oct to 21:35 on Thu 23 Oct and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ahoyi-ashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-10-26", "festival": "ekadashi", "name": "Ramā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-26", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5784, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-10-26T02:07:22+04:00", "utc": "1997-10-25T22:07:22Z", "ms": 877817241877.4049 }, "end": { "local": "1997-10-27T04:50:00+04:00", "utc": "1997-10-27T00:50:00Z", "ms": 877913400239.9379 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-26T02:07:22+04:00", "utc": "1997-10-25T22:07:22Z", "ms": 877817241877.4049 }, "end": { "local": "1997-10-27T04:50:00+04:00", "utc": "1997-10-27T00:50:00Z", "ms": 877913400239.9379 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-10-26", "window": { "start": { "local": "1997-10-26T06:25:51+04:00", "utc": "1997-10-26T02:25:51Z", "ms": 877832750963.6594 }, "end": { "local": "1997-10-26T06:25:51+04:00", "utc": "1997-10-26T02:25:51Z", "ms": 877832750963.6594 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-10-27", "window": { "start": { "local": "1997-10-27T06:26:24+04:00", "utc": "1997-10-27T02:26:24Z", "ms": 877919183905.3749 }, "end": { "local": "1997-10-27T06:26:24+04:00", "utc": "1997-10-27T02:26:24Z", "ms": 877919183905.3749 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 02:07 on Sun 26 Oct to 04:50 on Mon 27 Oct.", "fact": "1997-10-25T22:07:22Z → 1997-10-27T00:50:00Z" }, { "step": "kaala", "text": "Sunrise is at 06:26 on the 26th and 06:26 on the 27th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 26th and is not on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 5784 s" }, { "step": "ruling", "text": "Ramā Ekādaśī, Abu Dhabi, 1997: Sunday 26 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-26", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-26", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Ramā Ekādaśī 1997 falls on Sunday 26 October. Ekādaśī runs from 02:07 on Sun 26 Oct to 04:50 on Mon 27 Oct and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-10-26", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/govatsa-dvadashi", "festival": "govatsa-dvadashi", "name": "Govatsa Dvādaśī", "everyday": "Vasu Baras", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33725, "anga": { "type": "tithi", "index": 26, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-10-27T04:50:00+04:00", "utc": "1997-10-27T00:50:00Z", "ms": 877913400239.9379 }, "end": { "local": "1997-10-28T07:32:21+04:00", "utc": "1997-10-28T03:32:21Z", "ms": 878009541401.7523 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-27T04:50:00+04:00", "utc": "1997-10-27T00:50:00Z", "ms": 877913400239.9379 }, "end": { "local": "1997-10-28T07:32:21+04:00", "utc": "1997-10-28T03:32:21Z", "ms": 878009541401.7523 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-10-26", "window": { "start": { "local": "1997-10-26T17:46:37+04:00", "utc": "1997-10-26T13:46:37Z", "ms": 877873596600.3652 }, "end": { "local": "1997-10-26T19:27:55+04:00", "utc": "1997-10-26T15:27:55Z", "ms": 877879674907.6998 } }, "covered_min": 0, "window_min": 101, "qualifies": false }, { "local_date": "1997-10-27", "window": { "start": { "local": "1997-10-27T17:45:52+04:00", "utc": "1997-10-27T13:45:52Z", "ms": 877959952362.459 }, "end": { "local": "1997-10-27T19:27:21+04:00", "utc": "1997-10-27T15:27:21Z", "ms": 877966041025.2095 } }, "covered_min": 101, "window_min": 101, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 04:50 on Mon 27 Oct to 07:32 on Tue 28 Oct.", "fact": "1997-10-27T00:50:00Z → 1997-10-28T03:32:21Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:47–19:28 on the 26th, 17:46–19:27 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during pradoṣa. It covers 0 of 101 minutes on the 26th and 101 of 101 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 33725 s" }, { "step": "ruling", "text": "Govatsa Dvādaśī, Abu Dhabi, 1997: Monday 27 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govatsa-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 12 Govatsa dvadasi (pradosa vyapini). If occurs on two days, it is to be observed on the first day." } ], "kaala": "pradosha", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Govatsa Dvādaśī (Vasu Baras) 1997 falls on Monday 27 October. Dvādaśī runs from 04:50 on Mon 27 Oct to 07:32 on Tue 28 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/govatsa-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/yama-dipadana", "festival": "yama-dipadana", "name": "Yama Dīpadāna", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27678, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-10-28T07:32:21+04:00", "utc": "1997-10-28T03:32:21Z", "ms": 878009541401.7523 }, "end": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-28T07:32:21+04:00", "utc": "1997-10-28T03:32:21Z", "ms": 878009541401.7523 }, "end": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-10-28", "window": { "start": { "local": "1997-10-28T17:45:09+04:00", "utc": "1997-10-28T13:45:09Z", "ms": 878046309158.5751 }, "end": { "local": "1997-10-28T19:26:48+04:00", "utc": "1997-10-28T15:26:48Z", "ms": 878052408103.3019 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "1997-10-29", "window": { "start": { "local": "1997-10-29T17:44:27+04:00", "utc": "1997-10-29T13:44:27Z", "ms": 878132667011.0266 }, "end": { "local": "1997-10-29T19:26:16+04:00", "utc": "1997-10-29T15:26:16Z", "ms": 878138776160.7697 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:32 on Tue 28 Oct to 10:03 on Wed 29 Oct.", "fact": "1997-10-28T03:32:21Z → 1997-10-29T06:03:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:45–19:27 on the 28th, 17:44–19:26 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 102 of 102 minutes on the 28th and 0 of 102 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27678 s" }, { "step": "ruling", "text": "Yama Dīpadāna, Abu Dhabi, 1997: Tuesday 28 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dipadana", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 13 Yama dipadana (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-28", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Yama Dīpadāna 1997 falls on Tuesday 28 October. Trayodaśī runs from 07:32 on Tue 28 Oct to 10:03 on Wed 29 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/yama-dipadana", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-10-28", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27678, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-10-28T07:32:21+04:00", "utc": "1997-10-28T03:32:21Z", "ms": 878009541401.7523 }, "end": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-28T07:32:21+04:00", "utc": "1997-10-28T03:32:21Z", "ms": 878009541401.7523 }, "end": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-10-28", "window": { "start": { "local": "1997-10-28T17:45:09+04:00", "utc": "1997-10-28T13:45:09Z", "ms": 878046309158.5751 }, "end": { "local": "1997-10-28T19:26:48+04:00", "utc": "1997-10-28T15:26:48Z", "ms": 878052408103.3019 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "1997-10-29", "window": { "start": { "local": "1997-10-29T17:44:27+04:00", "utc": "1997-10-29T13:44:27Z", "ms": 878132667011.0266 }, "end": { "local": "1997-10-29T19:26:16+04:00", "utc": "1997-10-29T15:26:16Z", "ms": 878138776160.7697 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 07:32 on Tue 28 Oct to 10:03 on Wed 29 Oct.", "fact": "1997-10-28T03:32:21Z → 1997-10-29T06:03:09Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:45–19:27 on the 28th, 17:44–19:26 on the 29th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 102 of 102 minutes on the 28th and 0 of 102 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 27678 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Tuesday 28 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-28", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Tuesday 28 October. Trayodaśī runs from 07:32 on Tue 28 Oct to 10:03 on Wed 29 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-10-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-10-29", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-29", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34369, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 }, "end": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 }, "end": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 } }, "kaala": "nishita", "days": [ { "local_date": "1997-10-28", "window": { "start": { "local": "1997-10-28T23:42:20+04:00", "utc": "1997-10-28T19:42:20Z", "ms": 878067740201.3005 }, "end": { "local": "1997-10-29T00:30:20+04:00", "utc": "1997-10-28T20:30:20Z", "ms": 878070620201.3005 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-10-29", "window": { "start": { "local": "1997-10-29T23:42:16+04:00", "utc": "1997-10-29T19:42:16Z", "ms": 878154136322.5629 }, "end": { "local": "1997-10-30T00:30:16+04:00", "utc": "1997-10-29T20:30:16Z", "ms": 878157016322.5629 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:03 on Wed 29 Oct to 12:14 on Thu 30 Oct.", "fact": "1997-10-29T06:03:09Z → 1997-10-30T08:14:18Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:42–00:30 on the 28th, 23:42–00:30 on the 29th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 28th and 48 of 48 on the 29th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34369 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Wednesday 29 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-29", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-29", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Wednesday 29 October. Caturdaśī runs from 10:03 on Wed 29 Oct to 12:14 on Thu 30 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-10-29", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/naraka-chaturdashi", "festival": "naraka-chaturdashi", "name": "Naraka Caturdaśī", "everyday": "Choti Diwali", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 12938, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 }, "end": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-29T10:03:09+04:00", "utc": "1997-10-29T06:03:09Z", "ms": 878104988761.9838 }, "end": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 } }, "kaala": "arunodaya", "days": [ { "local_date": "1997-10-29", "window": { "start": { "local": "1997-10-29T04:45:52+04:00", "utc": "1997-10-29T00:45:52Z", "ms": 878085952299.2992 }, "end": { "local": "1997-10-29T06:27:31+04:00", "utc": "1997-10-29T02:27:31Z", "ms": 878092051244.026 } }, "covered_min": 0, "window_min": 102, "qualifies": false }, { "local_date": "1997-10-30", "window": { "start": { "local": "1997-10-30T04:46:16+04:00", "utc": "1997-10-30T00:46:16Z", "ms": 878172376484.3561 }, "end": { "local": "1997-10-30T06:28:06+04:00", "utc": "1997-10-30T02:28:06Z", "ms": 878178485634.0991 } }, "covered_min": 102, "window_min": 102, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 10:03 on Wed 29 Oct to 12:14 on Thu 30 Oct.", "fact": "1997-10-29T06:03:09Z → 1997-10-30T08:14:18Z" }, { "step": "kaala", "text": "Aruṇodaya is 2 muhūrtas before sunrise: 04:46–06:28 on the 29th, 04:46–06:28 on the 30th.", "fact": "arunodaya: prev-night-muhurta-14-15 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during aruṇodaya. It covers 0 of 102 minutes on the 29th and 102 of 102 on the 30th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one dawn qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 12938 s" }, { "step": "ruling", "text": "Naraka Caturdaśī, Abu Dhabi, 1997: Thursday 30 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naraka-chaturdashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 14 Naraka caturdasi (covering a period of 4 ghatikas before sunrise, if occurs on two successive days, it is to be observed on the first day)" } ], "kaala": "arunodaya", "priority": "purvaviddha", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-30", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Naraka Caturdaśī (Choti Diwali) 1997 falls on Thursday 30 October. Caturdaśī runs from 10:03 on Wed 29 Oct to 12:14 on Thu 30 Oct and covers all of aruṇodaya that dawn.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/naraka-chaturdashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/diwali-lakshmi-puja", "festival": "diwali-lakshmi-puja", "name": "Lakṣmī Pūjā", "everyday": "Diwali", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13323, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 }, "end": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 }, "end": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-10-30", "window": { "start": { "local": "1997-10-30T17:43:46+04:00", "utc": "1997-10-30T13:43:46Z", "ms": 878219025941.4662 }, "end": { "local": "1997-10-30T19:25:45+04:00", "utc": "1997-10-30T15:25:45Z", "ms": 878225145215.6549 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "1997-10-31", "window": { "start": { "local": "1997-10-31T17:43:06+04:00", "utc": "1997-10-31T13:43:06Z", "ms": 878305385970.8981 }, "end": { "local": "1997-10-31T19:25:15+04:00", "utc": "1997-10-31T15:25:15Z", "ms": 878311515285.2594 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 12:14 on Thu 30 Oct to 14:01 on Fri 31 Oct.", "fact": "1997-10-30T08:14:18Z → 1997-10-31T10:01:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:44–19:26 on the 30th, 17:43–19:25 on the 31st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during pradoṣa. It covers 102 of 102 minutes on the 30th and 0 of 102 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13323 s" }, { "step": "ruling", "text": "Lakṣmī Pūjā, Abu Dhabi, 1997: Thursday 30 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "diwali-lakshmi-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-30", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Lakṣmī Pūjā (Diwali) 1997 falls on Thursday 30 October. Amāvasyā runs from 12:14 on Thu 30 Oct to 14:01 on Fri 31 Oct and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/diwali-lakshmi-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/kali-puja", "festival": "kali-puja", "name": "Kālī Pūjā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-30", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34868, "anga": { "type": "tithi", "index": 29, "key": "amavasya", "name": "Amāvasyā", "start": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 }, "end": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "month": { "amanta": 6, "purnimanta": 7, "adhika": false, "amanta_name": "Āśvina", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-30T12:14:18+04:00", "utc": "1997-10-30T08:14:18Z", "ms": 878199257919.9047 }, "end": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 } }, "kaala": "nishita", "days": [ { "local_date": "1997-10-30", "window": { "start": { "local": "1997-10-30T23:42:13+04:00", "utc": "1997-10-30T19:42:13Z", "ms": 878240533219.6738 }, "end": { "local": "1997-10-31T00:30:13+04:00", "utc": "1997-10-30T20:30:13Z", "ms": 878243413219.6738 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-10-31", "window": { "start": { "local": "1997-10-31T23:42:11+04:00", "utc": "1997-10-31T19:42:11Z", "ms": 878326930899.753 }, "end": { "local": "1997-11-01T00:30:11+04:00", "utc": "1997-10-31T20:30:11Z", "ms": 878329810899.753 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Amāvasyā runs from 12:14 on Thu 30 Oct to 14:01 on Fri 31 Oct.", "fact": "1997-10-30T08:14:18Z → 1997-10-31T10:01:03Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:42–00:30 on the 30th, 23:42–00:30 on the 31st.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Amāvasyā must be present during niśītha. It covers 48 of 48 minutes on the 30th and 0 of 48 on the 31st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 34868 s" }, { "step": "ruling", "text": "Kālī Pūjā, Abu Dhabi, 1997: Thursday 30 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "K 30 Kali puja (nisithavyapini), Dipavali or Diwali (pradosa), Mahalaksmipuja (pradosa)" } ], "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-30", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-30", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kālī Pūjā 1997 falls on Thursday 30 October. Amāvasyā runs from 12:14 on Thu 30 Oct to 14:01 on Fri 31 Oct and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/kali-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/bali-puja", "festival": "bali-puja", "name": "Bali Pūjā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-10-31", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 8464, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "end": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "end": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-10-31", "window": { "start": { "local": "1997-10-31T17:43:06+04:00", "utc": "1997-10-31T13:43:06Z", "ms": 878305385970.8981 }, "end": { "local": "1997-10-31T19:25:15+04:00", "utc": "1997-10-31T15:25:15Z", "ms": 878311515285.2594 } }, "covered_min": 102, "window_min": 102, "qualifies": true }, { "local_date": "1997-11-01", "window": { "start": { "local": "1997-11-01T17:42:27+04:00", "utc": "1997-11-01T13:42:27Z", "ms": 878391747119.6366 }, "end": { "local": "1997-11-01T19:24:46+04:00", "utc": "1997-11-01T15:24:46Z", "ms": 878397886386.1023 } }, "covered_min": 0, "window_min": 102, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:01 on Fri 31 Oct to 15:21 on Sat 1 Nov.", "fact": "1997-10-31T10:01:03Z → 1997-11-01T11:21:23Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:43–19:25 on the 31st, 17:42–19:25 on the 1st.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pradoṣa. It covers 102 of 102 minutes on the 31st and 0 of 102 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 8464 s" }, { "step": "ruling", "text": "Bali Pūjā, Abu Dhabi, 1997: Friday 31 October.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "bali-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-10-31", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-10-31", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Bali Pūjā 1997 falls on Friday 31 October. Pratipadā runs from 14:01 on Fri 31 Oct to 15:21 on Sat 1 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/bali-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/govardhana-puja", "festival": "govardhana-puja", "name": "Govardhana Pūjā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5470, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "end": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "end": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-10-31", "window": { "start": { "local": "1997-10-31T11:41:53+04:00", "utc": "1997-10-31T07:41:53Z", "ms": 878283713234.3896 }, "end": { "local": "1997-10-31T12:29:53+04:00", "utc": "1997-10-31T08:29:53Z", "ms": 878286593234.3896 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-01", "window": { "start": { "local": "1997-11-01T11:41:51+04:00", "utc": "1997-11-01T07:41:51Z", "ms": 878370111474.1223 }, "end": { "local": "1997-11-01T12:29:51+04:00", "utc": "1997-11-01T08:29:51Z", "ms": 878372991474.1223 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:01 on Fri 31 Oct to 15:21 on Sat 1 Nov.", "fact": "1997-10-31T10:01:03Z → 1997-11-01T11:21:23Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 31st, 11:42–12:30 on the 1st.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during madhyāhna. It covers 0 of 48 minutes on the 31st and 48 of 48 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 5470 s" }, { "step": "ruling", "text": "Govardhana Pūjā, Abu Dhabi, 1997: Saturday 1 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "govardhana-puja", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-01", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Govardhana Pūjā 1997 falls on Saturday 1 November. Pratipadā runs from 14:01 on Fri 31 Oct to 15:21 on Sat 1 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/govardhana-puja", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/dyuta-pratipad", "festival": "dyuta-pratipad", "name": "Dyūta Pratipad", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-01", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 13654, "anga": { "type": "tithi", "index": 0, "key": "pratipada", "name": "Pratipadā", "start": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "end": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-10-31T14:01:03+04:00", "utc": "1997-10-31T10:01:03Z", "ms": 878292063161.944 }, "end": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 } }, "kaala": "purvahna", "days": [ { "local_date": "1997-10-31", "window": { "start": { "local": "1997-10-31T06:28:40+04:00", "utc": "1997-10-31T02:28:40Z", "ms": 878264920497.8813 }, "end": { "local": "1997-10-31T10:13:29+04:00", "utc": "1997-10-31T06:13:29Z", "ms": 878278408988.887 } }, "covered_min": 0, "window_min": 225, "qualifies": false }, { "local_date": "1997-11-01", "window": { "start": { "local": "1997-11-01T06:29:16+04:00", "utc": "1997-11-01T02:29:16Z", "ms": 878351355828.608 }, "end": { "local": "1997-11-01T10:13:40+04:00", "utc": "1997-11-01T06:13:40Z", "ms": 878364819592.2842 } }, "covered_min": 224, "window_min": 224, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pratipadā runs from 14:01 on Fri 31 Oct to 15:21 on Sat 1 Nov.", "fact": "1997-10-31T10:01:03Z → 1997-11-01T11:21:23Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:29–10:13 on the 31st, 06:29–10:14 on the 1st.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pratipadā must be present during pūrvāhṇa. It covers 0 of 225 minutes on the 31st and 224 of 224 on the 1st.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 13654 s" }, { "step": "ruling", "text": "Dyūta Pratipad, Abu Dhabi, 1997: Saturday 1 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dyuta-pratipad", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 1 Govardhana puja, Annakuta [purvaviddha], Balidaityaraja puja (pradosa), Dyuta pratipad (purvahna)." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-01", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-01", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Dyūta Pratipad 1997 falls on Saturday 1 November. Pratipadā runs from 14:01 on Fri 31 Oct to 15:21 on Sat 1 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/dyuta-pratipad", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/yama-dvitiya", "festival": "yama-dvitiya", "name": "Yama Dvitīyā", "everyday": "Bhai Dooj", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-02", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10292, "anga": { "type": "tithi", "index": 1, "key": "dvitiya", "name": "Dvitīyā", "start": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 }, "end": { "local": "1997-11-02T16:15:07+04:00", "utc": "1997-11-02T12:15:07Z", "ms": 878472907446.2861 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-01T15:21:23+04:00", "utc": "1997-11-01T11:21:23Z", "ms": 878383283295.7849 }, "end": { "local": "1997-11-02T16:15:07+04:00", "utc": "1997-11-02T12:15:07Z", "ms": 878472907446.2861 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-01", "window": { "start": { "local": "1997-11-01T11:41:51+04:00", "utc": "1997-11-01T07:41:51Z", "ms": 878370111474.1223 }, "end": { "local": "1997-11-01T12:29:51+04:00", "utc": "1997-11-01T08:29:51Z", "ms": 878372991474.1223 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-02", "window": { "start": { "local": "1997-11-02T11:41:51+04:00", "utc": "1997-11-02T07:41:51Z", "ms": 878456510512.8433 }, "end": { "local": "1997-11-02T12:29:51+04:00", "utc": "1997-11-02T08:29:51Z", "ms": 878459390512.8433 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvitīyā runs from 15:21 on Sat 1 Nov to 16:15 on Sun 2 Nov.", "fact": "1997-11-01T11:21:23Z → 1997-11-02T12:15:07Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 1st, 11:42–12:30 on the 2nd.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvitīyā must be present during madhyāhna. It covers 0 of 48 minutes on the 1st and 48 of 48 on the 2nd.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 10292 s" }, { "step": "ruling", "text": "Yama Dvitīyā, Abu Dhabi, 1997: Sunday 2 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "yama-dvitiya", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 2 Bhratrdvitiya, Yamadvitiya (madhyahna, purvaviddha), Masyadhara (Dwat) puja (Bihar)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-02", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-02", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Yama Dvitīyā (Bhai Dooj) 1997 falls on Sunday 2 November. Dvitīyā runs from 15:21 on Sat 1 Nov to 16:15 on Sun 2 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/yama-dvitiya", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/naga-chaturthi", "festival": "naga-chaturthi", "name": "Nāga Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15189, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-11-03T16:42:59+04:00", "utc": "1997-11-03T12:42:59Z", "ms": 878560979025.4932 }, "end": { "local": "1997-11-04T16:45:50+04:00", "utc": "1997-11-04T12:45:50Z", "ms": 878647550264.3795 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-03T16:42:59+04:00", "utc": "1997-11-03T12:42:59Z", "ms": 878560979025.4932 }, "end": { "local": "1997-11-04T16:45:50+04:00", "utc": "1997-11-04T12:45:50Z", "ms": 878647550264.3795 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-03", "window": { "start": { "local": "1997-11-03T11:41:50+04:00", "utc": "1997-11-03T07:41:50Z", "ms": 878542910355.7263 }, "end": { "local": "1997-11-03T12:29:50+04:00", "utc": "1997-11-03T08:29:50Z", "ms": 878545790355.7263 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-04", "window": { "start": { "local": "1997-11-04T11:41:51+04:00", "utc": "1997-11-04T07:41:51Z", "ms": 878629311007.1467 }, "end": { "local": "1997-11-04T12:29:51+04:00", "utc": "1997-11-04T08:29:51Z", "ms": 878632191007.1467 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:43 on Mon 3 Nov to 16:46 on Tue 4 Nov.", "fact": "1997-11-03T12:42:59Z → 1997-11-04T12:45:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 3rd, 11:42–12:30 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 15189 s" }, { "step": "ruling", "text": "Nāga Caturthī, Abu Dhabi, 1997: Tuesday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 4 Naga caturthi (paraviddha and madhyahnavyapini)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-04", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Nāga Caturthī 1997 falls on Tuesday 4 November. Caturthī runs from 16:43 on Mon 3 Nov to 16:46 on Tue 4 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/naga-chaturthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-11-04", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15189, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-11-03T16:42:59+04:00", "utc": "1997-11-03T12:42:59Z", "ms": 878560979025.4932 }, "end": { "local": "1997-11-04T16:45:50+04:00", "utc": "1997-11-04T12:45:50Z", "ms": 878647550264.3795 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-03T16:42:59+04:00", "utc": "1997-11-03T12:42:59Z", "ms": 878560979025.4932 }, "end": { "local": "1997-11-04T16:45:50+04:00", "utc": "1997-11-04T12:45:50Z", "ms": 878647550264.3795 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-03", "window": { "start": { "local": "1997-11-03T11:41:50+04:00", "utc": "1997-11-03T07:41:50Z", "ms": 878542910355.7263 }, "end": { "local": "1997-11-03T12:29:50+04:00", "utc": "1997-11-03T08:29:50Z", "ms": 878545790355.7263 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-04", "window": { "start": { "local": "1997-11-04T11:41:51+04:00", "utc": "1997-11-04T07:41:51Z", "ms": 878629311007.1467 }, "end": { "local": "1997-11-04T12:29:51+04:00", "utc": "1997-11-04T08:29:51Z", "ms": 878632191007.1467 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 16:43 on Mon 3 Nov to 16:46 on Tue 4 Nov.", "fact": "1997-11-03T12:42:59Z → 1997-11-04T12:45:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 3rd, 11:42–12:30 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 0 of 48 minutes on the 3rd and 48 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15189 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Tuesday 4 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-04", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Tuesday 4 November. Caturthī runs from 16:43 on Mon 3 Nov to 16:46 on Tue 4 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-11-04", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/surya-shashthi", "festival": "surya-shashthi", "name": "Sūrya Ṣaṣṭhī", "everyday": "Chhath", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 11302, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-11-05T16:24:14+04:00", "utc": "1997-11-05T12:24:14Z", "ms": 878732654254.4473 }, "end": { "local": "1997-11-06T15:38:17+04:00", "utc": "1997-11-06T11:38:17Z", "ms": 878816297135.7115 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-05T16:24:14+04:00", "utc": "1997-11-05T12:24:14Z", "ms": 878732654254.4473 }, "end": { "local": "1997-11-06T15:38:17+04:00", "utc": "1997-11-06T11:38:17Z", "ms": 878816297135.7115 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-05", "window": { "start": { "local": "1997-11-05T11:41:52+04:00", "utc": "1997-11-05T07:41:52Z", "ms": 878715712470.9178 }, "end": { "local": "1997-11-05T12:29:52+04:00", "utc": "1997-11-05T08:29:52Z", "ms": 878718592470.9178 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-06", "window": { "start": { "local": "1997-11-06T11:41:55+04:00", "utc": "1997-11-06T07:41:55Z", "ms": 878802114750.4543 }, "end": { "local": "1997-11-06T12:29:55+04:00", "utc": "1997-11-06T08:29:55Z", "ms": 878804994750.4543 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 16:24 on Wed 5 Nov to 15:38 on Thu 6 Nov.", "fact": "1997-11-05T12:24:14Z → 1997-11-06T11:38:17Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 5th, 11:42–12:30 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 11302 s" }, { "step": "ruling", "text": "Sūrya Ṣaṣṭhī, Abu Dhabi, 1997: Thursday 6 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "surya-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Nadi sasthi, Skanda sasthi (Madras), Surya sasthi, Chhat (Bihar)." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Sūrya Ṣaṣṭhī (Chhath) 1997 falls on Thursday 6 November. Ṣaṣṭhī runs from 16:24 on Wed 5 Nov to 15:38 on Thu 6 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/surya-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/gopashtami", "festival": "gopashtami", "name": "Gopāṣṭamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-08", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1368, "anga": { "type": "tithi", "index": 7, "key": "ashtami", "name": "Aṣṭamī", "start": { "local": "1997-11-07T14:27:49+04:00", "utc": "1997-11-07T10:27:49Z", "ms": 878898469216.5574 }, "end": { "local": "1997-11-08T12:52:50+04:00", "utc": "1997-11-08T08:52:50Z", "ms": 878979170105.0822 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-07T14:27:49+04:00", "utc": "1997-11-07T10:27:49Z", "ms": 878898469216.5574 }, "end": { "local": "1997-11-08T12:52:50+04:00", "utc": "1997-11-08T08:52:50Z", "ms": 878979170105.0822 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-07", "window": { "start": { "local": "1997-11-07T11:41:58+04:00", "utc": "1997-11-07T07:41:58Z", "ms": 878888517848.9479 }, "end": { "local": "1997-11-07T12:29:58+04:00", "utc": "1997-11-07T08:29:58Z", "ms": 878891397848.9479 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-08", "window": { "start": { "local": "1997-11-08T11:42:02+04:00", "utc": "1997-11-08T07:42:02Z", "ms": 878974921769.5535 }, "end": { "local": "1997-11-08T12:30:02+04:00", "utc": "1997-11-08T08:30:02Z", "ms": 878977801769.5535 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Aṣṭamī runs from 14:28 on Fri 7 Nov to 12:53 on Sat 8 Nov.", "fact": "1997-11-07T10:27:49Z → 1997-11-08T08:52:50Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 7th, 11:42–12:30 on the 8th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Aṣṭamī must be present during madhyāhna. It covers 0 of 48 minutes on the 7th and 48 of 48 on the 8th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 1368 s" }, { "step": "ruling", "text": "Gopāṣṭamī, Abu Dhabi, 1997: Saturday 8 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "gopashtami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 8 Gopastami, Gosthastami." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-08", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Gopāṣṭamī 1997 falls on Saturday 8 November. Aṣṭamī runs from 14:28 on Fri 7 Nov to 12:53 on Sat 8 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/gopashtami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/akshaya-navami", "festival": "akshaya-navami", "name": "Akṣaya Navamī", "everyday": "Amla Navami", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2311, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1997-11-08T12:52:50+04:00", "utc": "1997-11-08T08:52:50Z", "ms": 878979170105.0822 }, "end": { "local": "1997-11-09T10:54:00+04:00", "utc": "1997-11-09T06:54:00Z", "ms": 879058440113.6542 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-08T12:52:50+04:00", "utc": "1997-11-08T08:52:50Z", "ms": 878979170105.0822 }, "end": { "local": "1997-11-09T10:54:00+04:00", "utc": "1997-11-09T06:54:00Z", "ms": 879058440113.6542 } }, "kaala": "purvahna", "days": [ { "local_date": "1997-11-08", "window": { "start": { "local": "1997-11-08T06:33:35+04:00", "utc": "1997-11-08T02:33:35Z", "ms": 878956415405.4144 }, "end": { "local": "1997-11-08T10:15:13+04:00", "utc": "1997-11-08T06:15:13Z", "ms": 878969712981.5071 } }, "covered_min": 0, "window_min": 222, "qualifies": false }, { "local_date": "1997-11-09", "window": { "start": { "local": "1997-11-09T06:34:14+04:00", "utc": "1997-11-09T02:34:14Z", "ms": 879042854098.1627 }, "end": { "local": "1997-11-09T10:15:29+04:00", "utc": "1997-11-09T06:15:29Z", "ms": 879056129043.0997 } }, "covered_min": 221, "window_min": 221, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 12:53 on Sat 8 Nov to 10:54 on Sun 9 Nov.", "fact": "1997-11-08T08:52:50Z → 1997-11-09T06:54:00Z" }, { "step": "kaala", "text": "Pūrvāhṇa is first 5 of 15 day muhūrtas: 06:34–10:15 on the 8th, 06:34–10:15 on the 9th.", "fact": "purvahna: day-muhurta-1-5 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during pūrvāhṇa. It covers 0 of 222 minutes on the 8th and 221 of 221 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one forenoon qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 2311 s" }, { "step": "ruling", "text": "Akṣaya Navamī, Abu Dhabi, 1997: Sunday 9 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akshaya-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "purvahna", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-09", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Akṣaya Navamī (Amla Navami) 1997 falls on Sunday 9 November. Navamī runs from 12:53 on Sat 8 Nov to 10:54 on Sun 9 Nov and covers all of pūrvāhṇa that forenoon.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/akshaya-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/durga-navami", "festival": "durga-navami", "name": "Durgā Navamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-09", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 1368, "anga": { "type": "tithi", "index": 8, "key": "navami", "name": "Navamī", "start": { "local": "1997-11-08T12:52:50+04:00", "utc": "1997-11-08T08:52:50Z", "ms": 878979170105.0822 }, "end": { "local": "1997-11-09T10:54:00+04:00", "utc": "1997-11-09T06:54:00Z", "ms": 879058440113.6542 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-08T12:52:50+04:00", "utc": "1997-11-08T08:52:50Z", "ms": 878979170105.0822 }, "end": { "local": "1997-11-09T10:54:00+04:00", "utc": "1997-11-09T06:54:00Z", "ms": 879058440113.6542 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-08", "window": { "start": { "local": "1997-11-08T11:42:02+04:00", "utc": "1997-11-08T07:42:02Z", "ms": 878974921769.5535 }, "end": { "local": "1997-11-08T12:30:02+04:00", "utc": "1997-11-08T08:30:02Z", "ms": 878977801769.5535 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-09", "window": { "start": { "local": "1997-11-09T11:42:07+04:00", "utc": "1997-11-09T07:42:07Z", "ms": 879061326515.5682 }, "end": { "local": "1997-11-09T12:30:07+04:00", "utc": "1997-11-09T08:30:07Z", "ms": 879064206515.5682 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "second-day", "explanation": [ { "step": "anga", "text": "Navamī runs from 12:53 on Sat 8 Nov to 10:54 on Sun 9 Nov.", "fact": "1997-11-08T08:52:50Z → 1997-11-09T06:54:00Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:42–12:30 on the 8th, 11:42–12:30 on the 9th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Navamī must be present during madhyāhna. It covers 0 of 48 minutes on the 8th and 0 of 48 on the 9th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Neither midday qualifies. The rule takes the second day.", "fact": "priority: purvaviddha → second-day · margin 1368 s" }, { "step": "ruling", "text": "Durgā Navamī, Abu Dhabi, 1997: Sunday 9 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "durga-navami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 9 Aksaya navami (purvahnavyapini), Jagaddhatri puja (Bengal), (udayavyapini one muhurta), Anla navami (Orissa), Durga navami (purvaviddha), Gauri vrata." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-09", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-08", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Durgā Navamī 1997 falls on Sunday 9 November. Navamī runs from 12:53 on Sat 8 Nov to 10:54 on Sun 9 Nov, and reaches madhyāhna on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/durga-navami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-11-10", "festival": "ekadashi", "name": "Prabodhinī Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 2514, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-11-10T08:33:09+04:00", "utc": "1997-11-10T04:33:09Z", "ms": 879136389489.9294 }, "end": { "local": "1997-11-11T05:53:39+04:00", "utc": "1997-11-11T01:53:39Z", "ms": 879213218901.965 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-10T08:33:09+04:00", "utc": "1997-11-10T04:33:09Z", "ms": 879136389489.9294 }, "end": { "local": "1997-11-11T05:53:39+04:00", "utc": "1997-11-11T01:53:39Z", "ms": 879213218901.965 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-11-10", "window": { "start": { "local": "1997-11-10T06:34:53+04:00", "utc": "1997-11-10T02:34:53Z", "ms": 879129293155.2388 }, "end": { "local": "1997-11-10T06:34:53+04:00", "utc": "1997-11-10T02:34:53Z", "ms": 879129293155.2388 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-11-11", "window": { "start": { "local": "1997-11-11T06:35:33+04:00", "utc": "1997-11-11T02:35:33Z", "ms": 879215732564.211 }, "end": { "local": "1997-11-11T06:35:33+04:00", "utc": "1997-11-11T02:35:33Z", "ms": 879215732564.211 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "tithi-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 08:33 on Mon 10 Nov to 05:54 on Tue 11 Nov.", "fact": "1997-11-10T04:33:09Z → 1997-11-11T01:53:39Z" }, { "step": "kaala", "text": "Sunrise is at 06:35 on the 10th and 06:36 on the 11th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 10th and is not on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Neither sunrise qualifies. The day the tithi falls on is taken.", "fact": "priority: paraviddha → tithi-day · margin 2514 s" }, { "step": "ruling", "text": "Prabodhinī Ekādaśī, Abu Dhabi, 1997: Monday 10 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Prabodhinī Ekādaśī 1997 falls on Monday 10 November. Ekādaśī runs from 08:33 on Mon 10 Nov to 05:54 on Tue 11 Nov, and is current at sunrise on neither day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-11-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-11-12", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-12", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 16772, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-11-12T03:00:28+04:00", "utc": "1997-11-11T23:00:28Z", "ms": 879289228124.4172 }, "end": { "local": "1997-11-13T00:00:13+04:00", "utc": "1997-11-12T20:00:13Z", "ms": 879364813251.3967 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-12T03:00:28+04:00", "utc": "1997-11-11T23:00:28Z", "ms": 879289228124.4172 }, "end": { "local": "1997-11-13T00:00:13+04:00", "utc": "1997-11-12T20:00:13Z", "ms": 879364813251.3967 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-11-11", "window": { "start": { "local": "1997-11-11T17:37:04+04:00", "utc": "1997-11-11T13:37:04Z", "ms": 879255424432.8551 }, "end": { "local": "1997-11-11T19:20:57+04:00", "utc": "1997-11-11T15:20:57Z", "ms": 879261657483.5498 } }, "covered_min": 0, "window_min": 104, "qualifies": false }, { "local_date": "1997-11-12", "window": { "start": { "local": "1997-11-12T17:36:39+04:00", "utc": "1997-11-12T13:36:39Z", "ms": 879341799174.2765 }, "end": { "local": "1997-11-12T19:20:41+04:00", "utc": "1997-11-12T15:20:41Z", "ms": 879348040936.3718 } }, "covered_min": 104, "window_min": 104, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:00 on Wed 12 Nov to 00:00 on Thu 13 Nov.", "fact": "1997-11-11T23:00:28Z → 1997-11-12T20:00:13Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:37–19:21 on the 11th, 17:37–19:21 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 104 minutes on the 11th and 104 of 104 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 16772 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Wednesday 12 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-12", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-12", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Wednesday 12 November. Trayodaśī runs from 03:00 on Wed 12 Nov to 00:00 on Thu 13 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-11-12", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/rasayatra", "festival": "rasayatra", "name": "Rāsayātrā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 9719, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-11-13T21:00:55+04:00", "utc": "1997-11-13T17:00:55Z", "ms": 879440454554.6715 }, "end": { "local": "1997-11-14T18:11:37+04:00", "utc": "1997-11-14T14:11:37Z", "ms": 879516696925.4808 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-13T21:00:55+04:00", "utc": "1997-11-13T17:00:55Z", "ms": 879440454554.6715 }, "end": { "local": "1997-11-14T18:11:37+04:00", "utc": "1997-11-14T14:11:37Z", "ms": 879516696925.4808 } }, "kaala": "nishita", "days": [ { "local_date": "1997-11-13", "window": { "start": { "local": "1997-11-13T23:42:54+04:00", "utc": "1997-11-13T19:42:54Z", "ms": 879450174026.7806 }, "end": { "local": "1997-11-14T00:30:54+04:00", "utc": "1997-11-13T20:30:54Z", "ms": 879453054026.7806 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-11-14", "window": { "start": { "local": "1997-11-14T23:43:03+04:00", "utc": "1997-11-14T19:43:03Z", "ms": 879536583110.4875 }, "end": { "local": "1997-11-15T00:31:03+04:00", "utc": "1997-11-14T20:31:03Z", "ms": 879539463110.4875 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:01 on Thu 13 Nov to 18:12 on Fri 14 Nov.", "fact": "1997-11-13T17:00:55Z → 1997-11-14T14:11:37Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:43–00:31 on the 13th, 23:43–00:31 on the 14th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during niśītha. It covers 48 of 48 minutes on the 13th and 0 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 9719 s" }, { "step": "ruling", "text": "Rāsayātrā, Abu Dhabi, 1997: Thursday 13 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "rasayatra", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "nishita", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Rāsayātrā 1997 falls on Thursday 13 November. Pūrṇimā runs from 21:01 on Thu 13 Nov to 18:12 on Fri 14 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/rasayatra", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/kartiki-purnima", "festival": "kartiki-purnima", "name": "Kārtikī Pūrṇimā", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-14", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20454, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-11-13T21:00:55+04:00", "utc": "1997-11-13T17:00:55Z", "ms": 879440454554.6715 }, "end": { "local": "1997-11-14T18:11:37+04:00", "utc": "1997-11-14T14:11:37Z", "ms": 879516696925.4808 }, "month": { "amanta": 7, "purnimanta": 7, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Kārtika" } }, "span": { "of": "tithi", "start": { "local": "1997-11-13T21:00:55+04:00", "utc": "1997-11-13T17:00:55Z", "ms": 879440454554.6715 }, "end": { "local": "1997-11-14T18:11:37+04:00", "utc": "1997-11-14T14:11:37Z", "ms": 879516696925.4808 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-11-13", "window": { "start": { "local": "1997-11-13T11:42:34+04:00", "utc": "1997-11-13T07:42:34Z", "ms": 879406953830.3087 }, "end": { "local": "1997-11-13T12:30:34+04:00", "utc": "1997-11-13T08:30:34Z", "ms": 879409833830.3087 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-14", "window": { "start": { "local": "1997-11-14T11:42:43+04:00", "utc": "1997-11-14T07:42:43Z", "ms": 879493362762.4575 }, "end": { "local": "1997-11-14T12:30:43+04:00", "utc": "1997-11-14T08:30:43Z", "ms": 879496242762.4575 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 21:01 on Thu 13 Nov to 18:12 on Fri 14 Nov.", "fact": "1997-11-13T17:00:55Z → 1997-11-14T14:11:37Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:43–12:31 on the 13th, 11:43–12:31 on the 14th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during madhyāhna. It covers 0 of 48 minutes on the 13th and 48 of 48 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 20454 s" }, { "step": "ruling", "text": "Kārtikī Pūrṇimā, Abu Dhabi, 1997: Friday 14 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "kartiki-purnima", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Rasayatra, (nisithavyapini, i.e. covering a period from 24 minutes before to 24 minutes after midnight. If occurs on two days or does not occur on any day, it is to be observed on the second day), Puskar Fair. Ratha yatra (Jain), Tripurotsava (evening), Kedara vrata (Orissa), Kartiki purnima." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-14", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-14", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kārtikī Pūrṇimā 1997 falls on Friday 14 November. Pūrṇimā runs from 21:01 on Thu 13 Nov to 18:12 on Fri 14 Nov and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/kartiki-purnima", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-11-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29118, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-11-17T12:20:24+04:00", "utc": "1997-11-17T08:20:24Z", "ms": 879754823717.2231 }, "end": { "local": "1997-11-18T11:44:31+04:00", "utc": "1997-11-18T07:44:31Z", "ms": 879839071056.5789 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-11-17T12:20:24+04:00", "utc": "1997-11-17T08:20:24Z", "ms": 879754823717.2231 }, "end": { "local": "1997-11-18T11:44:31+04:00", "utc": "1997-11-18T07:44:31Z", "ms": 879839071056.5789 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-11-17", "window": { "start": { "local": "1997-11-17T20:25:42+04:00", "utc": "1997-11-17T16:25:42Z", "ms": 879783941859.5756 }, "end": { "local": "1997-11-17T20:25:42+04:00", "utc": "1997-11-17T16:25:42Z", "ms": 879783941859.5756 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-11-18", "window": { "start": { "local": "1997-11-18T21:20:15+04:00", "utc": "1997-11-18T17:20:15Z", "ms": 879873615083.268 }, "end": { "local": "1997-11-18T21:20:15+04:00", "utc": "1997-11-18T17:20:15Z", "ms": 879873615083.268 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 12:20 on Mon 17 Nov to 11:45 on Tue 18 Nov.", "fact": "1997-11-17T08:20:24Z → 1997-11-18T07:44:31Z" }, { "step": "kaala", "text": "Moonrise is at 20:26 on the 17th and 21:20 on the 18th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is on the 17th and is not on the 18th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 29118 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Monday 17 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-17", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Monday 17 November. Caturthī runs from 12:20 on Mon 17 Nov to 11:45 on Tue 18 Nov and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-11-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-11-25", "festival": "ekadashi", "name": "Utpannā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 20309, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-11-24T22:36:39+04:00", "utc": "1997-11-24T18:36:39Z", "ms": 880396599031.4688 }, "end": { "local": "1997-11-26T01:07:27+04:00", "utc": "1997-11-25T21:07:27Z", "ms": 880492046979.0013 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-11-24T22:36:39+04:00", "utc": "1997-11-24T18:36:39Z", "ms": 880396599031.4688 }, "end": { "local": "1997-11-26T01:07:27+04:00", "utc": "1997-11-25T21:07:27Z", "ms": 880492046979.0013 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-11-25", "window": { "start": { "local": "1997-11-25T06:45:13+04:00", "utc": "1997-11-25T02:45:13Z", "ms": 880425912952.1622 }, "end": { "local": "1997-11-25T06:45:13+04:00", "utc": "1997-11-25T02:45:13Z", "ms": 880425912952.1622 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-11-26", "window": { "start": { "local": "1997-11-26T06:45:56+04:00", "utc": "1997-11-26T02:45:56Z", "ms": 880512355595.0347 }, "end": { "local": "1997-11-26T06:45:56+04:00", "utc": "1997-11-26T02:45:56Z", "ms": 880512355595.0347 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 22:37 on Mon 24 Nov to 01:07 on Wed 26 Nov.", "fact": "1997-11-24T18:36:39Z → 1997-11-25T21:07:27Z" }, { "step": "kaala", "text": "Sunrise is at 06:45 on the 25th and 06:46 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 20309 s" }, { "step": "ruling", "text": "Utpannā Ekādaśī, Abu Dhabi, 1997: Tuesday 25 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-25", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Utpannā Ekādaśī 1997 falls on Tuesday 25 November. Ekādaśī runs from 22:37 on Mon 24 Nov to 01:07 on Wed 26 Nov and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-11-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-11-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 28478, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-11-27T03:13:41+04:00", "utc": "1997-11-26T23:13:41Z", "ms": 880586020522.5233 }, "end": { "local": "1997-11-28T04:48:03+04:00", "utc": "1997-11-28T00:48:03Z", "ms": 880678082630.2781 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-11-27T03:13:41+04:00", "utc": "1997-11-26T23:13:41Z", "ms": 880586020522.5233 }, "end": { "local": "1997-11-28T04:48:03+04:00", "utc": "1997-11-28T00:48:03Z", "ms": 880678082630.2781 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-11-26", "window": { "start": { "local": "1997-11-26T17:33:15+04:00", "utc": "1997-11-26T13:33:15Z", "ms": 880551195256.3815 }, "end": { "local": "1997-11-26T19:19:02+04:00", "utc": "1997-11-26T15:19:02Z", "ms": 880557542320.9818 } }, "covered_min": 0, "window_min": 106, "qualifies": false }, { "local_date": "1997-11-27", "window": { "start": { "local": "1997-11-27T17:33:12+04:00", "utc": "1997-11-27T13:33:12Z", "ms": 880637591816.0745 }, "end": { "local": "1997-11-27T19:19:05+04:00", "utc": "1997-11-27T15:19:05Z", "ms": 880643945021.1058 } }, "covered_min": 106, "window_min": 106, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 03:14 on Thu 27 Nov to 04:48 on Fri 28 Nov.", "fact": "1997-11-26T23:13:41Z → 1997-11-28T00:48:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:33–19:19 on the 26th, 17:33–19:19 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 106 minutes on the 26th and 106 of 106 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 28478 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Thursday 27 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Thursday 27 November. Trayodaśī runs from 03:14 on Thu 27 Nov to 04:48 on Fri 28 Nov and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-11-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-11-28", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-11-28", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 15226, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-11-28T04:48:03+04:00", "utc": "1997-11-28T00:48:03Z", "ms": 880678082630.2781 }, "end": { "local": "1997-11-29T05:47:50+04:00", "utc": "1997-11-29T01:47:50Z", "ms": 880768069907.2701 }, "month": { "amanta": 7, "purnimanta": 8, "adhika": false, "amanta_name": "Kārtika", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-11-28T04:48:03+04:00", "utc": "1997-11-28T00:48:03Z", "ms": 880678082630.2781 }, "end": { "local": "1997-11-29T05:47:50+04:00", "utc": "1997-11-29T01:47:50Z", "ms": 880768069907.2701 } }, "kaala": "nishita", "days": [ { "local_date": "1997-11-27", "window": { "start": { "local": "1997-11-27T23:46:16+04:00", "utc": "1997-11-27T19:46:16Z", "ms": 880659976334.9424 }, "end": { "local": "1997-11-28T00:34:16+04:00", "utc": "1997-11-27T20:34:16Z", "ms": 880662856334.9424 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-11-28", "window": { "start": { "local": "1997-11-28T23:46:37+04:00", "utc": "1997-11-28T19:46:37Z", "ms": 880746396636.9197 }, "end": { "local": "1997-11-29T00:34:37+04:00", "utc": "1997-11-28T20:34:37Z", "ms": 880749276636.9197 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 04:48 on Fri 28 Nov to 05:48 on Sat 29 Nov.", "fact": "1997-11-28T00:48:03Z → 1997-11-29T01:47:50Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 23:46–00:34 on the 27th, 23:47–00:35 on the 28th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 0 of 48 minutes on the 27th and 48 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 15226 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Friday 28 November.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-11-28", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-11-28", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Friday 28 November. Caturdaśī runs from 04:48 on Fri 28 Nov to 05:48 on Sat 29 Nov and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-11-28", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-12-03", "festival": "vinayaka-chaturthi", "name": "Vināyaka Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-03", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 25108, "anga": { "type": "tithi", "index": 3, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-12-03T04:49:40+04:00", "utc": "1997-12-03T00:49:40Z", "ms": 881110179569.5718 }, "end": { "local": "1997-12-04T03:42:18+04:00", "utc": "1997-12-03T23:42:18Z", "ms": 881192537852.6089 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-03T04:49:40+04:00", "utc": "1997-12-03T00:49:40Z", "ms": 881110179569.5718 }, "end": { "local": "1997-12-04T03:42:18+04:00", "utc": "1997-12-03T23:42:18Z", "ms": 881192537852.6089 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-12-03", "window": { "start": { "local": "1997-12-03T11:48:07+04:00", "utc": "1997-12-03T07:48:07Z", "ms": 881135287278.3806 }, "end": { "local": "1997-12-03T12:36:07+04:00", "utc": "1997-12-03T08:36:07Z", "ms": 881138167278.3806 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-12-04", "window": { "start": { "local": "1997-12-04T11:48:32+04:00", "utc": "1997-12-04T07:48:32Z", "ms": 881221711529.1775 }, "end": { "local": "1997-12-04T12:36:32+04:00", "utc": "1997-12-04T08:36:32Z", "ms": 881224591529.1775 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 04:50 on Wed 3 Dec to 03:42 on Thu 4 Dec.", "fact": "1997-12-03T00:49:40Z → 1997-12-03T23:42:18Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:48–12:36 on the 3rd, 11:49–12:37 on the 4th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturthī must be present during madhyāhna. It covers 48 of 48 minutes on the 3rd and 0 of 48 on the 4th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 25108 s" }, { "step": "ruling", "text": "Vināyaka Caturthī, Abu Dhabi, 1997: Wednesday 3 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "vinayaka-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "kaala": "madhyahna", "priority": "unstated", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-03", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-03", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Vināyaka Caturthī 1997 falls on Wednesday 3 December. Caturthī runs from 04:50 on Wed 3 Dec to 03:42 on Thu 4 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/vinayaka-chaturthi?on=1997-12-03", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/naga-panchami-margashirsha", "festival": "naga-panchami-margashirsha", "name": "Nāga Pañcamī (Mārgaśīrṣa)", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-04", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 29174, "anga": { "type": "tithi", "index": 4, "key": "panchami", "name": "Pañcamī", "start": { "local": "1997-12-04T03:42:18+04:00", "utc": "1997-12-03T23:42:18Z", "ms": 881192537852.6089 }, "end": { "local": "1997-12-05T02:21:15+04:00", "utc": "1997-12-04T22:21:15Z", "ms": 881274074717.7842 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-04T03:42:18+04:00", "utc": "1997-12-03T23:42:18Z", "ms": 881192537852.6089 }, "end": { "local": "1997-12-05T02:21:15+04:00", "utc": "1997-12-04T22:21:15Z", "ms": 881274074717.7842 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-12-04", "window": { "start": { "local": "1997-12-04T11:48:32+04:00", "utc": "1997-12-04T07:48:32Z", "ms": 881221711529.1775 }, "end": { "local": "1997-12-04T12:36:32+04:00", "utc": "1997-12-04T08:36:32Z", "ms": 881224591529.1775 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-12-05", "window": { "start": { "local": "1997-12-05T11:48:56+04:00", "utc": "1997-12-05T07:48:56Z", "ms": 881308136339.3673 }, "end": { "local": "1997-12-05T12:36:56+04:00", "utc": "1997-12-05T08:36:56Z", "ms": 881311016339.3673 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pañcamī runs from 03:42 on Thu 4 Dec to 02:21 on Fri 5 Dec.", "fact": "1997-12-03T23:42:18Z → 1997-12-04T22:21:15Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 4th, 11:49–12:37 on the 5th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pañcamī must be present during madhyāhna. It covers 48 of 48 minutes on the 4th and 0 of 48 on the 5th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 29174 s" }, { "step": "ruling", "text": "Nāga Pañcamī (Mārgaśīrṣa), Abu Dhabi, 1997: Thursday 4 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "naga-panchami-margashirsha", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 5 Naga pancami (2nd) (paraviddha)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-04", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-04", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Nāga Pañcamī (Mārgaśīrṣa) 1997 falls on Thursday 4 December. Pañcamī runs from 03:42 on Thu 4 Dec to 02:21 on Fri 5 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/naga-panchami-margashirsha", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/champa-shashthi", "festival": "champa-shashthi", "name": "Campā Ṣaṣṭhī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34062, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-12-05T02:21:15+04:00", "utc": "1997-12-04T22:21:15Z", "ms": 881274074717.7842 }, "end": { "local": "1997-12-06T00:48:27+04:00", "utc": "1997-12-05T20:48:27Z", "ms": 881354906503.9176 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-05T02:21:15+04:00", "utc": "1997-12-04T22:21:15Z", "ms": 881274074717.7842 }, "end": { "local": "1997-12-06T00:48:27+04:00", "utc": "1997-12-05T20:48:27Z", "ms": 881354906503.9176 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-12-05", "window": { "start": { "local": "1997-12-05T11:48:56+04:00", "utc": "1997-12-05T07:48:56Z", "ms": 881308136339.3673 }, "end": { "local": "1997-12-05T12:36:56+04:00", "utc": "1997-12-05T08:36:56Z", "ms": 881311016339.3673 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-12-06", "window": { "start": { "local": "1997-12-06T11:49:22+04:00", "utc": "1997-12-06T07:49:22Z", "ms": 881394561680.8687 }, "end": { "local": "1997-12-06T12:37:22+04:00", "utc": "1997-12-06T08:37:22Z", "ms": 881397441680.8687 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:21 on Fri 5 Dec to 00:48 on Sat 6 Dec.", "fact": "1997-12-04T22:21:15Z → 1997-12-05T20:48:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 5th, 11:49–12:37 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34062 s" }, { "step": "ruling", "text": "Campā Ṣaṣṭhī, Abu Dhabi, 1997: Friday 5 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "champa-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "not_evaluated": "The row calls the day special with Śatabhiṣaj nakṣatra, Vyatīpāta yoga and a Sunday; none is tested.", "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Campā Ṣaṣṭhī 1997 falls on Friday 5 December. Ṣaṣṭhī runs from 02:21 on Fri 5 Dec to 00:48 on Sat 6 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/champa-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/skanda-shashthi", "festival": "skanda-shashthi", "name": "Skanda Ṣaṣṭhī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-05", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34062, "anga": { "type": "tithi", "index": 5, "key": "shashthi", "name": "Ṣaṣṭhī", "start": { "local": "1997-12-05T02:21:15+04:00", "utc": "1997-12-04T22:21:15Z", "ms": 881274074717.7842 }, "end": { "local": "1997-12-06T00:48:27+04:00", "utc": "1997-12-05T20:48:27Z", "ms": 881354906503.9176 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-05T02:21:15+04:00", "utc": "1997-12-04T22:21:15Z", "ms": 881274074717.7842 }, "end": { "local": "1997-12-06T00:48:27+04:00", "utc": "1997-12-05T20:48:27Z", "ms": 881354906503.9176 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-12-05", "window": { "start": { "local": "1997-12-05T11:48:56+04:00", "utc": "1997-12-05T07:48:56Z", "ms": 881308136339.3673 }, "end": { "local": "1997-12-05T12:36:56+04:00", "utc": "1997-12-05T08:36:56Z", "ms": 881311016339.3673 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-12-06", "window": { "start": { "local": "1997-12-06T11:49:22+04:00", "utc": "1997-12-06T07:49:22Z", "ms": 881394561680.8687 }, "end": { "local": "1997-12-06T12:37:22+04:00", "utc": "1997-12-06T08:37:22Z", "ms": 881397441680.8687 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ṣaṣṭhī runs from 02:21 on Fri 5 Dec to 00:48 on Sat 6 Dec.", "fact": "1997-12-04T22:21:15Z → 1997-12-05T20:48:27Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 5th, 11:49–12:37 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ṣaṣṭhī must be present during madhyāhna. It covers 48 of 48 minutes on the 5th and 0 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 34062 s" }, { "step": "ruling", "text": "Skanda Ṣaṣṭhī, Abu Dhabi, 1997: Friday 5 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "skanda-shashthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 6 Campa sasthi (Maharashtra) (paraviddha). (Special when combined with naksatra Satabhisaj, yoga Vyatipata and Sunday), Skanda sasthi (purvaviddha), Guha sasthi" } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-05", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-05", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Skanda Ṣaṣṭhī 1997 falls on Friday 5 December. Ṣaṣṭhī runs from 02:21 on Fri 5 Dec to 00:48 on Sat 6 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/skanda-shashthi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/mitra-saptami", "festival": "mitra-saptami", "name": "Mitra Saptamī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-06", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 37653, "anga": { "type": "tithi", "index": 6, "key": "saptami", "name": "Saptamī", "start": { "local": "1997-12-06T00:48:27+04:00", "utc": "1997-12-05T20:48:27Z", "ms": 881354906503.9176 }, "end": { "local": "1997-12-06T23:04:54+04:00", "utc": "1997-12-06T19:04:54Z", "ms": 881435094290.2583 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-06T00:48:27+04:00", "utc": "1997-12-05T20:48:27Z", "ms": 881354906503.9176 }, "end": { "local": "1997-12-06T23:04:54+04:00", "utc": "1997-12-06T19:04:54Z", "ms": 881435094290.2583 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-12-05", "window": { "start": { "local": "1997-12-05T11:48:56+04:00", "utc": "1997-12-05T07:48:56Z", "ms": 881308136339.3673 }, "end": { "local": "1997-12-05T12:36:56+04:00", "utc": "1997-12-05T08:36:56Z", "ms": 881311016339.3673 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-12-06", "window": { "start": { "local": "1997-12-06T11:49:22+04:00", "utc": "1997-12-06T07:49:22Z", "ms": 881394561680.8687 }, "end": { "local": "1997-12-06T12:37:22+04:00", "utc": "1997-12-06T08:37:22Z", "ms": 881397441680.8687 } }, "covered_min": 48, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Saptamī runs from 00:48 on Sat 6 Dec to 23:05 on Sat 6 Dec.", "fact": "1997-12-05T20:48:27Z → 1997-12-06T19:04:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:49–12:37 on the 5th, 11:49–12:37 on the 6th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Saptamī must be present during madhyāhna. It covers 0 of 48 minutes on the 5th and 48 of 48 on the 6th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: purvaviddha → only-day · margin 37653 s" }, { "step": "ruling", "text": "Mitra Saptamī, Abu Dhabi, 1997: Saturday 6 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "mitra-saptami", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 7 Mitra saptami (purvaviddha)." } ], "kaala": "madhyahna", "priority": "purvaviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-06", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-06", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mitra Saptamī 1997 falls on Saturday 6 December. Saptamī runs from 00:48 on Sat 6 Dec to 23:05 on Sat 6 Dec and covers all of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/mitra-saptami", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-12-10", "festival": "ekadashi", "name": "Mokṣadā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-10", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 27946, "anga": { "type": "tithi", "index": 10, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-12-09T16:57:14+04:00", "utc": "1997-12-09T12:57:14Z", "ms": 881672233601.738 }, "end": { "local": "1997-12-10T14:41:21+04:00", "utc": "1997-12-10T10:41:21Z", "ms": 881750481279.9938 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-09T16:57:14+04:00", "utc": "1997-12-09T12:57:14Z", "ms": 881672233601.738 }, "end": { "local": "1997-12-10T14:41:21+04:00", "utc": "1997-12-10T10:41:21Z", "ms": 881750481279.9938 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-12-09", "window": { "start": { "local": "1997-12-09T06:54:56+04:00", "utc": "1997-12-09T02:54:56Z", "ms": 881636095971.86 }, "end": { "local": "1997-12-09T06:54:56+04:00", "utc": "1997-12-09T02:54:56Z", "ms": 881636095971.86 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-12-10", "window": { "start": { "local": "1997-12-10T06:55:35+04:00", "utc": "1997-12-10T02:55:35Z", "ms": 881722535029.7839 }, "end": { "local": "1997-12-10T06:55:35+04:00", "utc": "1997-12-10T02:55:35Z", "ms": 881722535029.7839 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 16:57 on Tue 9 Dec to 14:41 on Wed 10 Dec.", "fact": "1997-12-09T12:57:14Z → 1997-12-10T10:41:21Z" }, { "step": "kaala", "text": "Sunrise is at 06:55 on the 9th and 06:56 on the 10th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is not on the 9th and is on the 10th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 27946 s" }, { "step": "ruling", "text": "Mokṣadā Ekādaśī, Abu Dhabi, 1997: Wednesday 10 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-10", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-10", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Mokṣadā Ekādaśī 1997 falls on Wednesday 10 December. Ekādaśī runs from 16:57 on Tue 9 Dec to 14:41 on Wed 10 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-12-10", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/akhanda-dvadashi", "festival": "akhanda-dvadashi", "name": "Akhaṇḍa Dvādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 882, "anga": { "type": "tithi", "index": 11, "key": "dvadashi", "name": "Dvādaśī", "start": { "local": "1997-12-10T14:41:21+04:00", "utc": "1997-12-10T10:41:21Z", "ms": 881750481279.9938 }, "end": { "local": "1997-12-11T12:24:54+04:00", "utc": "1997-12-11T08:24:54Z", "ms": 881828693847.8536 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-10T14:41:21+04:00", "utc": "1997-12-10T10:41:21Z", "ms": 881750481279.9938 }, "end": { "local": "1997-12-11T12:24:54+04:00", "utc": "1997-12-11T08:24:54Z", "ms": 881828693847.8536 } }, "kaala": "madhyahna", "days": [ { "local_date": "1997-12-10", "window": { "start": { "local": "1997-12-10T11:51:08+04:00", "utc": "1997-12-10T07:51:08Z", "ms": 881740267806.9133 }, "end": { "local": "1997-12-10T12:39:08+04:00", "utc": "1997-12-10T08:39:08Z", "ms": 881743147806.9133 } }, "covered_min": 0, "window_min": 48, "qualifies": false }, { "local_date": "1997-12-11", "window": { "start": { "local": "1997-12-11T11:51:35+04:00", "utc": "1997-12-11T07:51:35Z", "ms": 881826695393.5297 }, "end": { "local": "1997-12-11T12:39:35+04:00", "utc": "1997-12-11T08:39:35Z", "ms": 881829575393.5297 } }, "covered_min": 33, "window_min": 48, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Dvādaśī runs from 14:41 on Wed 10 Dec to 12:25 on Thu 11 Dec.", "fact": "1997-12-10T10:41:21Z → 1997-12-11T08:24:54Z" }, { "step": "kaala", "text": "Madhyāhna is 1 ghaṭikā either side of midday: 11:51–12:39 on the 10th, 11:52–12:40 on the 11th.", "fact": "madhyahna: midday-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Dvādaśī must be present during madhyāhna. It covers 0 of 48 minutes on the 10th and 33 of 48 on the 11th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one midday qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 882 s" }, { "step": "ruling", "text": "Akhaṇḍa Dvādaśī, Abu Dhabi, 1997: Thursday 11 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "akhanda-dvadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 12 Matsya dvadasi, Akhanda dvadasi (paraviddha), Vyanjana dvadasi & Dana dvadasi (Orissa)." } ], "kaala": "madhyahna", "priority": "paraviddha", "when_absent": "second-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Akhaṇḍa Dvādaśī 1997 falls on Thursday 11 December. Dvādaśī runs from 14:41 on Wed 10 Dec to 12:25 on Thu 11 Dec and covers 33 of 48 minutes of madhyāhna that midday.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/akhanda-dvadashi", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-12-11", "festival": "pradosha-vrata", "name": "Śukla Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-11", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 18603, "anga": { "type": "tithi", "index": 12, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-12-11T12:24:54+04:00", "utc": "1997-12-11T08:24:54Z", "ms": 881828693847.8536 }, "end": { "local": "1997-12-12T10:13:46+04:00", "utc": "1997-12-12T06:13:46Z", "ms": 881907225851.1697 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-11T12:24:54+04:00", "utc": "1997-12-11T08:24:54Z", "ms": 881828693847.8536 }, "end": { "local": "1997-12-12T10:13:46+04:00", "utc": "1997-12-12T06:13:46Z", "ms": 881907225851.1697 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-12-11", "window": { "start": { "local": "1997-12-11T17:34:57+04:00", "utc": "1997-12-11T13:34:57Z", "ms": 881847297256.9177 }, "end": { "local": "1997-12-11T19:21:52+04:00", "utc": "1997-12-11T15:21:52Z", "ms": 881853712480.9514 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1997-12-12", "window": { "start": { "local": "1997-12-12T17:35:15+04:00", "utc": "1997-12-12T13:35:15Z", "ms": 881933715261.6335 }, "end": { "local": "1997-12-12T19:22:13+04:00", "utc": "1997-12-12T15:22:13Z", "ms": 881940133055.5323 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 12:25 on Thu 11 Dec to 10:14 on Fri 12 Dec.", "fact": "1997-12-11T08:24:54Z → 1997-12-12T06:13:46Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:35–19:22 on the 11th, 17:35–19:22 on the 12th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 107 of 107 minutes on the 11th and 0 of 107 on the 12th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 18603 s" }, { "step": "ruling", "text": "Śukla Pradoṣa Vrata, Abu Dhabi, 1997: Thursday 11 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-11", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-11", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śukla Pradoṣa Vrata 1997 falls on Thursday 11 December. Trayodaśī runs from 12:25 on Thu 11 Dec to 10:14 on Fri 12 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-12-11", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/dattatreyotpatti", "festival": "dattatreyotpatti", "name": "Dattātreyotpatti", "everyday": "Datta Jayanti", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-13", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 33626, "anga": { "type": "tithi", "index": 14, "key": "purnima", "name": "Pūrṇimā", "start": { "local": "1997-12-13T08:15:09+04:00", "utc": "1997-12-13T04:15:09Z", "ms": 881986509032.0474 }, "end": { "local": "1997-12-14T06:37:05+04:00", "utc": "1997-12-14T02:37:05Z", "ms": 882067025349.626 }, "month": { "amanta": 8, "purnimanta": 8, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Mārgaśīrṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-13T08:15:09+04:00", "utc": "1997-12-13T04:15:09Z", "ms": 881986509032.0474 }, "end": { "local": "1997-12-14T06:37:05+04:00", "utc": "1997-12-14T02:37:05Z", "ms": 882067025349.626 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-12-13", "window": { "start": { "local": "1997-12-13T17:35:35+04:00", "utc": "1997-12-13T13:35:35Z", "ms": 882020134580.6191 }, "end": { "local": "1997-12-13T19:22:35+04:00", "utc": "1997-12-13T15:22:35Z", "ms": 882026554680.7587 } }, "covered_min": 107, "window_min": 107, "qualifies": true }, { "local_date": "1997-12-14", "window": { "start": { "local": "1997-12-14T17:35:55+04:00", "utc": "1997-12-14T13:35:55Z", "ms": 882106555195.1571 }, "end": { "local": "1997-12-14T19:22:57+04:00", "utc": "1997-12-14T15:22:57Z", "ms": 882112977335.8077 } }, "covered_min": 0, "window_min": 107, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Pūrṇimā runs from 08:15 on Sat 13 Dec to 06:37 on Sun 14 Dec.", "fact": "1997-12-13T04:15:09Z → 1997-12-14T02:37:05Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:36–19:23 on the 13th, 17:36–19:23 on the 14th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Pūrṇimā must be present during pradoṣa. It covers 107 of 107 minutes on the 13th and 0 of 107 on the 14th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 104" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 33626 s" }, { "step": "ruling", "text": "Dattātreyotpatti, Abu Dhabi, 1997: Saturday 13 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "dattatreyotpatti", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 104", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "S 15 Dattatreyotpatti (pradosa)." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-13", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-13", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Dattātreyotpatti (Datta Jayanti) 1997 falls on Saturday 13 December. Pūrṇimā runs from 08:15 on Sat 13 Dec to 06:37 on Sun 14 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/dattatreyotpatti", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-12-17", "festival": "sankashta-chaturthi", "name": "Saṅkaṣṭa Caturthī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-17", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 32527, "anga": { "type": "tithi", "index": 18, "key": "chaturthi", "name": "Caturthī", "start": { "local": "1997-12-17T05:03:45+04:00", "utc": "1997-12-17T01:03:45Z", "ms": 882320624581.5117 }, "end": { "local": "1997-12-18T05:57:16+04:00", "utc": "1997-12-18T01:57:16Z", "ms": 882410236282.9065 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-17T05:03:45+04:00", "utc": "1997-12-17T01:03:45Z", "ms": 882320624581.5117 }, "end": { "local": "1997-12-18T05:57:16+04:00", "utc": "1997-12-18T01:57:16Z", "ms": 882410236282.9065 } }, "kaala": "moonrise", "days": [ { "local_date": "1997-12-16", "window": { "start": { "local": "1997-12-16T20:00:50+04:00", "utc": "1997-12-16T16:00:50Z", "ms": 882288050008.1044 }, "end": { "local": "1997-12-16T20:00:50+04:00", "utc": "1997-12-16T16:00:50Z", "ms": 882288050008.1044 } }, "covered_min": 0, "window_min": 0, "qualifies": false }, { "local_date": "1997-12-17", "window": { "start": { "local": "1997-12-17T20:55:09+04:00", "utc": "1997-12-17T16:55:09Z", "ms": 882377709112.6339 }, "end": { "local": "1997-12-17T20:55:09+04:00", "utc": "1997-12-17T16:55:09Z", "ms": 882377709112.6339 } }, "covered_min": 1, "window_min": 0, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturthī runs from 05:04 on Wed 17 Dec to 05:57 on Thu 18 Dec.", "fact": "1997-12-17T01:03:45Z → 1997-12-18T01:57:16Z" }, { "step": "kaala", "text": "Moonrise is at 20:01 on the 16th and 20:55 on the 17th.", "fact": "moonrise: disc centre, 31′" }, { "step": "rule", "text": "Caturthī must be current at moonrise. It is not on the 16th and is on the 17th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one moonrise qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 32527 s" }, { "step": "ruling", "text": "Saṅkaṣṭa Caturthī, Abu Dhabi, 1997: Wednesday 17 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "sankashta-chaturthi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The sukla caturthi in each month is called Ganesa caturthi or Vinayaka caturthi. It is observed at madhyahna. The chief among them are caturthis of Bhadrapada and Magha. Similarly the krsna caturthi in each month is called Sankasta caturthi, to be observed on the day when the tithi is current at moonrise. It is called Angaraka caturthi if it falls on Tuesday." } ], "not_evaluated": "It is called Aṅgāraka Caturthī when it falls on a Tuesday; the weekday is not tested.", "kaala": "moonrise", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-17", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-17", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saṅkaṣṭa Caturthī 1997 falls on Wednesday 17 December. Caturthī runs from 05:04 on Wed 17 Dec to 05:57 on Thu 18 Dec and is current at moonrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/sankashta-chaturthi?on=1997-12-17", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/ekadashi?on=1997-12-25", "festival": "ekadashi", "name": "Saphalā Ekādaśī", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-25", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 34867, "anga": { "type": "tithi", "index": 25, "key": "ekadashi", "name": "Ekādaśī", "start": { "local": "1997-12-24T19:48:48+04:00", "utc": "1997-12-24T15:48:48Z", "ms": 882978528319.9481 }, "end": { "local": "1997-12-25T21:23:13+04:00", "utc": "1997-12-25T17:23:13Z", "ms": 883070593223.0121 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-24T19:48:48+04:00", "utc": "1997-12-24T15:48:48Z", "ms": 882978528319.9481 }, "end": { "local": "1997-12-25T21:23:13+04:00", "utc": "1997-12-25T17:23:13Z", "ms": 883070593223.0121 } }, "kaala": "sunrise", "days": [ { "local_date": "1997-12-25", "window": { "start": { "local": "1997-12-25T07:03:54+04:00", "utc": "1997-12-25T03:03:54Z", "ms": 883019034379.275 }, "end": { "local": "1997-12-25T07:03:54+04:00", "utc": "1997-12-25T03:03:54Z", "ms": 883019034379.275 } }, "covered_min": 1, "window_min": 0, "qualifies": true }, { "local_date": "1997-12-26", "window": { "start": { "local": "1997-12-26T07:04:20+04:00", "utc": "1997-12-26T03:04:20Z", "ms": 883105460320.4885 }, "end": { "local": "1997-12-26T07:04:20+04:00", "utc": "1997-12-26T03:04:20Z", "ms": 883105460320.4885 } }, "covered_min": 0, "window_min": 0, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Ekādaśī runs from 19:49 on Wed 24 Dec to 21:23 on Thu 25 Dec.", "fact": "1997-12-24T15:48:48Z → 1997-12-25T17:23:13Z" }, { "step": "kaala", "text": "Sunrise is at 07:04 on the 25th and 07:04 on the 26th.", "fact": "sunrise: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Ekādaśī must be current at sunrise. It is on the 25th and is not on the 26th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 105" }, { "step": "tie_break", "text": "Only one sunrise qualifies. No tie-break is needed.", "fact": "priority: paraviddha → only-day · margin 34867 s" }, { "step": "ruling", "text": "Saphalā Ekādaśī, Abu Dhabi, 1997: Thursday 25 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "ekadashi", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 105", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The general rule prevalent in most part of India is that it is to be observed on the day when the tithi is current at sunrise. If it occurs on two successive days, it is to be observed on the second day. When does not occur on any day, it is to be observed on the day of the tithi, but widows and sannyasins would observe on the next-day." } ], "not_evaluated": "The next-day observance for widows and sannyāsins, the Bengal avoidance of an ekādaśī joined to daśamī, and the Vaiṣṇava aruṇodaya rule belong to other traditions and are not applied.", "kaala": "sunrise", "priority": "paraviddha", "when_absent": "tithi-day" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-25", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-25", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Saphalā Ekādaśī 1997 falls on Thursday 25 December. Ekādaśī runs from 19:49 on Wed 24 Dec to 21:23 on Thu 25 Dec and is current at sunrise that day.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/ekadashi?on=1997-12-25", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-12-27", "festival": "pradosha-vrata", "name": "Kṛṣṇa Pradoṣa Vrata", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 10057, "anga": { "type": "tithi", "index": 27, "key": "trayodashi", "name": "Trayodaśī", "start": { "local": "1997-12-26T22:16:17+04:00", "utc": "1997-12-26T18:16:17Z", "ms": 883160176725.3695 }, "end": { "local": "1997-12-27T22:27:03+04:00", "utc": "1997-12-27T18:27:03Z", "ms": 883247223263.3816 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-26T22:16:17+04:00", "utc": "1997-12-26T18:16:17Z", "ms": 883160176725.3695 }, "end": { "local": "1997-12-27T22:27:03+04:00", "utc": "1997-12-27T18:27:03Z", "ms": 883247223263.3816 } }, "kaala": "pradosha", "days": [ { "local_date": "1997-12-26", "window": { "start": { "local": "1997-12-26T17:41:35+04:00", "utc": "1997-12-26T13:41:35Z", "ms": 883143694550.9811 }, "end": { "local": "1997-12-26T19:28:40+04:00", "utc": "1997-12-26T15:28:40Z", "ms": 883150119964.1382 } }, "covered_min": 0, "window_min": 107, "qualifies": false }, { "local_date": "1997-12-27", "window": { "start": { "local": "1997-12-27T17:42:10+04:00", "utc": "1997-12-27T13:42:10Z", "ms": 883230129542.5391 }, "end": { "local": "1997-12-27T19:29:13+04:00", "utc": "1997-12-27T15:29:13Z", "ms": 883236553448.1096 } }, "covered_min": 107, "window_min": 107, "qualifies": true } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Trayodaśī runs from 22:16 on Fri 26 Dec to 22:27 on Sat 27 Dec.", "fact": "1997-12-26T18:16:17Z → 1997-12-27T18:27:03Z" }, { "step": "kaala", "text": "Pradoṣa is 2 muhūrtas after sunset: 17:42–19:29 on the 26th, 17:42–19:29 on the 27th.", "fact": "pradosha: night-muhurta-1-2 · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Trayodaśī must be present during pradoṣa. It covers 0 of 107 minutes on the 26th and 107 of 107 on the 27th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one evening qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 10057 s" }, { "step": "ruling", "text": "Kṛṣṇa Pradoṣa Vrata, Abu Dhabi, 1997: Saturday 27 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "pradosha-vrata", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "Pradosa-vrata — The sukla and krsna trayodasi tithis of each month when cover the period of 'pradosa', are observed as Pradosa-vratas." } ], "kaala": "pradosha", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Kṛṣṇa Pradoṣa Vrata 1997 falls on Saturday 27 December. Trayodaśī runs from 22:16 on Fri 26 Dec to 22:27 on Sat 27 Dec and covers all of pradoṣa that evening.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/pradosha-vrata?on=1997-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }, { "id": "/abu-dhabi/festivals/1997/shivaratri?on=1997-12-27", "festival": "shivaratri", "name": "Śivarātri", "tradition": "smarta", "place": "292968", "year": 1997, "local_date": "1997-12-27", "confidence": "determinate", "boundary_reasons": [], "boundary_margin_s": 5556, "anga": { "type": "tithi", "index": 28, "key": "chaturdashi", "name": "Caturdaśī", "start": { "local": "1997-12-27T22:27:03+04:00", "utc": "1997-12-27T18:27:03Z", "ms": 883247223263.3816 }, "end": { "local": "1997-12-28T21:58:35+04:00", "utc": "1997-12-28T17:58:35Z", "ms": 883331914924.1647 }, "month": { "amanta": 8, "purnimanta": 9, "adhika": false, "amanta_name": "Mārgaśīrṣa", "purnimanta_name": "Pauṣa" } }, "span": { "of": "tithi", "start": { "local": "1997-12-27T22:27:03+04:00", "utc": "1997-12-27T18:27:03Z", "ms": 883247223263.3816 }, "end": { "local": "1997-12-28T21:58:35+04:00", "utc": "1997-12-28T17:58:35Z", "ms": 883331914924.1647 } }, "kaala": "nishita", "days": [ { "local_date": "1997-12-27", "window": { "start": { "local": "1997-12-27T23:59:39+04:00", "utc": "1997-12-27T19:59:39Z", "ms": 883252779188.4285 }, "end": { "local": "1997-12-28T00:47:39+04:00", "utc": "1997-12-27T20:47:39Z", "ms": 883255659188.4285 } }, "covered_min": 48, "window_min": 48, "qualifies": true }, { "local_date": "1997-12-28", "window": { "start": { "local": "1997-12-29T00:00:08+04:00", "utc": "1997-12-28T20:00:08Z", "ms": 883339208367.1226 }, "end": { "local": "1997-12-29T00:48:08+04:00", "utc": "1997-12-28T20:48:08Z", "ms": 883342088367.1226 } }, "covered_min": 0, "window_min": 48, "qualifies": false } ], "decided_by": "only-day", "explanation": [ { "step": "anga", "text": "Caturdaśī runs from 22:27 on Sat 27 Dec to 21:59 on Sun 28 Dec.", "fact": "1997-12-27T18:27:03Z → 1997-12-28T17:58:35Z" }, { "step": "kaala", "text": "Niśītha is 1 ghaṭikā either side of midnight: 00:00–00:48 on the 27th, 00:00–00:48 on the 28th.", "fact": "nishita: midnight-pm-1-ghatika · sunrise and sunset: upper limb, 31′ + 16′" }, { "step": "rule", "text": "Caturdaśī must be present during niśītha. It covers 48 of 48 minutes on the 27th and 0 of 48 on the 28th.", "fact": "Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 108" }, { "step": "tie_break", "text": "Only one night qualifies. No tie-break is needed.", "fact": "priority: unstated → only-day · margin 5556 s" }, { "step": "ruling", "text": "Śivarātri, Abu Dhabi, 1997: Saturday 27 December.", "fact": "confidence: determinate" } ], "rule": { "kind": "lunar", "id": "shivaratri", "references": [ { "text": "Calendar Reform Committee 1955, General Rules for Religious Festivals", "locator": "p. 108", "url": "https://archive.org/details/calendar_reform_comittee_report", "quote": "The krsna caturdasi in each month is called 'Sivaratri'. The chief among them is that of Magha. The tithi must cover nisitha (or pradosa in some opinion)." } ], "not_evaluated": "The alternative opinion that reads pradoṣa instead of niśītha is not evaluated.", "kaala": "nishita", "priority": "unstated", "when_absent": "unstated" }, "alternatives": [ { "kind": "profile", "profile": "classical@2026.1", "local_date": "1997-12-27", "confidence": "determinate" }, { "kind": "profile", "profile": "compat-drikpanchang@2026.1", "local_date": "1997-12-27", "confidence": "determinate" } ], "quote": "In Abu Dhabi, Śivarātri 1997 falls on Saturday 27 December. Caturdaśī runs from 22:27 on Sat 27 Dec to 21:59 on Sun 28 Dec and covers all of niśītha that night.", "cite": "https://ahargana.org/abu-dhabi/festivals/1997/shivaratri?on=1997-12-27", "method": "pac-rp@2026.1", "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } } ], "engine": { "version": "0.1.0", "ruleset": "2026.3-draft", "kernel": "de440-1900-2100", "kernel_sha256": "7eef444f9e5bd8786b8b5b72e775ecc376991b953a6246ec7a49d2c37434ea74", "tzdata": "2026f" } }